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Article
Publication date: 3 May 2016

R. Usop, Z.H.Z Abidin, N.A. Mazni, A.N. Hadi, N.A. Halim, R.M. Taha, M.A. Careem, S.R. Majid and A.K. Arof

This paper aims to study the colour stability of chlorophyll and the effect of copper (II) nitrate – Cu(NO3)2 – as an additive in natural dye coating films after being exposed to…

291

Abstract

Purpose

This paper aims to study the colour stability of chlorophyll and the effect of copper (II) nitrate – Cu(NO3)2 – as an additive in natural dye coating films after being exposed to ultraviolet-A (UV-A).

Design/methodology/approach

The natural dye was extracted from the leaves of Cassia alata L. using absolute ethanol as the solvent. The extract was divided into two parts and, one of it was added with 3 wt.% Cu(NO3)2 as an additive. The polymer blend of poly(methyl methacrylate) (PMMA) and acrylic polyol was used as the coating binder. Both parts of the dye with and without additive were mixed with the blended polymer in a specific ratio. The resulted mixtures were applied as coating films on glass substrates. The colour stability of the coating films on exposure to UV-A with the time of exposure was observed with Commission internationale de l’éclairage (CIE) L*a*b* colour coordinates. The hidden power by the means of reflectivity and glossiness of the coatings was also studied. Statistical standard deviation (STD) was used to analyse the data.

Findings

The test showed that the coating films containing Cu(NO3)2 had smaller colour differences, (ΔE*) indicating higher colour stability. The analysis on hidden power also showed that the coating film with Cu(NO3)2 was 1.6 times more stable than the film without additive. All the measurements in this study were observed within 35 days of duration.

Research limitations/implications

This paper implies the potential of using natural dye extracted from Cassia alata L. leaves as a stable dye colourant for coating applications.

Practical implications

The coating film developed in this study is suitable for glass substrate applications.

Originality/value

A new method of preparing solvent-based coating film from PMMA–acrylic polyol with chlorophyll colourant is introduced in this study.

Details

Pigment & Resin Technology, vol. 45 no. 3
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 18 October 2018

R. Usop, L. Sulaiman, N.A. Mazni, N.S.A. Manah, N. Anuar, A.K. Arof and Z.H.Z. Abidin

The purpose of this paper is to study the colour stability and water content resistivity of the green colour coating paint film (consisting of chlorophyll) during exposure to…

96

Abstract

Purpose

The purpose of this paper is to study the colour stability and water content resistivity of the green colour coating paint film (consisting of chlorophyll) during exposure to ultraviolet A (UV-A).

Design/methodology/approach

The natural green dye was prepared by immersing Cassia alata L. leaves in absolute ethanol. The extract was prepared in two batches of dye samples where one of it was a pure dye and the other was added with 3 Wt. % Cu(NO3)2 as an additive. Polymer blend as a binder was prepared by mixing poly(methyl methacrylate) (PMMA) and commercial acrylic polyol. The blended polymer was mixed with the natural dye in a specific ratio and applied as coating paint film on glass panel surfaces. The visible spectrum stability (colour stability) and water content resistivity of the coating paint films during exposure to UV-A were monitored.

Findings

Addition of Cu(NO3)2 had improved the colour stability of the coating paint film. Fourier transform infrared spectroscopy analysis showed that both coating paint films do not absorb water and are resistive to water content.

Research limitations/implications

The ability of Cu(NO3)2 as an colour stability additive to the natural green dye applied in the coating paint film.

Practical implications

The coating paint film developed in this work is suitable to be applied on glass substrates.

Originality/value

The colour stability of the coating paint film was analysed by using the reflectance spectrum.

Details

Pigment & Resin Technology, vol. 47 no. 6
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 2 March 2015

S.V. Lee, A.N. Hadi, Z.H.Z. Zainal Abidin, N.A. Mazni, N.A. Halim, R. Usop, H.C. Hassan, S.R. Majid and A.K. Arof

The purpose of this paper is to observe the colour and thermal stability of natural red dye consisting of anthocyanin with addition of different aqueous acids and applied as…

330

Abstract

Purpose

The purpose of this paper is to observe the colour and thermal stability of natural red dye consisting of anthocyanin with addition of different aqueous acids and applied as coating films.

Design/methodology/approach

The natural red dye was extracted from Hibiscus sabdariffa L. (roselle) flowers and mixed with 1 per cent hydrochloric acid, 5 per cent acetic acid, 5 per cent citric acid and 5 per cent oxalic acid. All the dye samples were exposed to heat and UV-B to observe the colour stability by calculating the half-life and rate of reaction. In coating film application, each of the dye samples was mixed with 25 wt% of poly(vinyl alcohol) (PVA) and applied on to a glass substrate. The coating samples’ colour stability was observed by using CIE L*a*b* colour space coordinates. The coating films’ weight loss stability against temperature was observed by using thermogravimetric analysis.

Findings

Addition of hydrochloric acid enhances the thermal and UV stability of the anthocyanin natural dye. This can be observed from the calculation of the half-life of the dye. The half-life values for the thermal and UV stability studies were 1,155 hours and 210 hours, respectively. In coating films, the sample with addition of acetic acid showed the highest colour stability with colour difference (ΔE*) value 8.95.

Research limitations/implications

The coating films developed in this work are not suitable to be applied on metal substrates due to the presence of water, which can contribute to the corrosion formation.

Practical implications

The coating films developed in this work are suitable for washable coating application. In other words, they are non-permanent coatings applied on a glass substrate.

Originality/value

Development of water-based coatings from PVA binder with anthocyanin colourant is introduced in this study.

Details

Pigment & Resin Technology, vol. 44 no. 2
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 6 July 2015

S.V. Lee, R. Usop, A.N. Hadi, N.A. Mazni, S.R. Majid, A.K. Arof, N.A. Halim and Z.H.Z. Abidin

The purpose of this paper is to observe the thermal and colour stabilities of coating films consisting of natural dye anthocyanin colourant with acid and nitrate salt as…

138

Abstract

Purpose

The purpose of this paper is to observe the thermal and colour stabilities of coating films consisting of natural dye anthocyanin colourant with acid and nitrate salt as additives.

Design/methodology/approach

The natural dye was extracted from Hibiscus sabdariffa L. (Roselle) by using distilled water as solvent. The extracted dye was mixed with 1 weight per cent hydrochloric acid and 5 weight per cent calcium nitrate to conduct the comparison study. The dye samples were than mixed with poly (vinyl alcohol) (PVA). The mixtures were applied on glass panels to form coating films. The coating films were left to dry for 24 hours. The thermal stability of coating films was investigated by using thermogravimetric analysis (TGA). The amorphousness coating films molecular structures were observed by using x-ray diffraction (XRD). CIE L*a*b* colour coordinate space technique was used to investigate the coating films colour stability against ultraviolet (UV).

Findings

The results show that addition of hydrochloric acid (HCl acid) enhanced thermal stability of PVA-anthocyanin coating and shifted the degradation temperature to higher temperature at 300°C. HCl acid also improved UV stability of the coating system significantly with the reduced ΔE from 26.67 to 16.89. Addition of calcium nitrate (Ca(NO3)2) salt promotes good interaction with PVA-anthocyanin system that caused structural changes, improved thermal stability and increased Tg from 61.5 to 83.1°C.

Research limitations/implications

The potential of using natural dye extracted from plant as renewable material.

Practical implications

The coating films developed in this works are suitable for glass substrate application.

Originality/value

Development of water-based coating from PVA binder with anthocyanin colourant is introduced in this study.

Details

Pigment & Resin Technology, vol. 44 no. 4
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 23 August 2013

Samuel Folorunso Adeyinka‐Ojo and Catheryn Khoo‐Lattimore

For years, the community in Bario has chosen to organize a slow food and cultural festival annually to draw tourists to Bario. The aim of this paper is to explore the staging of…

2017

Abstract

Purpose

For years, the community in Bario has chosen to organize a slow food and cultural festival annually to draw tourists to Bario. The aim of this paper is to explore the staging of slow food events as a high‐yield strategy for rural tourism destinations and how they can be used to move a destination up the value chain in responsible rural tourism practices.

Design/methodology/approach

The study adopted an interpretative approach. Participant observation and 15 in‐depth interviews with local and foreign tourists were conducted to elicit responses before, during and after the event. In addition, photography and videography were also employed.

Findings

Findings revealed that the event was seen by many as a catalyst for the provision and development of infrastructural development. More importantly, 67 percent of the foreign tourists interviewed state that the price of goods and services at the event are reasonable and affordable, given the unique cultural experience during the festival in Bario. These findings imply that such an event has potential in generating higher yield for a rural destination. However, findings also show that the event could be better marketed and managed.

Originality/value

A significant contribution of this study is its exploration of the use of slow food events in a rural destination as a strategy in generating high yield for a rural tourism destination.

Details

Worldwide Hospitality and Tourism Themes, vol. 5 no. 4
Type: Research Article
ISSN: 1755-4217

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Article
Publication date: 12 March 2019

L. Sulaiman, Z.H.Z. Abidin, S.A.M. Yunus, N.A. Mazni, A.N. Hadi, A.K. Arof and K. Simarani

This paper aims to discuss about the benefits of Cu(NO3)2 applied in coating paint film that consists of plant extract from Cassia Alata. Cu(NO3)2 has been added to the coating…

205

Abstract

Purpose

This paper aims to discuss about the benefits of Cu(NO3)2 applied in coating paint film that consists of plant extract from Cassia Alata. Cu(NO3)2 has been added to the coating paint film as a colour stabilizer and as an antifungal property by forming a zone of inhibition towards fungal growth.

Design/methodology/approach

The coating paint film resin consists of a mixture of poly (methyl methacrylate) (PMMA) and acrylic polyol. The coating paint film’s performances were observed in terms of visible optical and physical appearance.

Findings

When exposed to the fungus Trichoderma Sp., a zone of inhibition of 208 mm2 was formed around the coating paint film and therefore it gave the coating paint films an antifungal property. The commission internationale de l’éclairage (CIE) L*a*b* colour coordinate system was used to identify the colour changes in the coating paint film and it was found that the addition of Cu(NO3)2 to the coating paint film has a better colour stability, as it has a lower standard deviation (STD) value of 6.46 than the pure dye coating paint film of 8.95. The gloss of coating paint film with the addition of Cu(NO3)2 was found to be have a more stable gloss based on its smaller STD value at both angles taken at 20° and 60°.

Research limitations/implications

The Cassia Alata plant has different amount of antifungal properties based on location its growth.

Practical implications

The coating paint film developed in this study is suitable for indoor applications.

Originality/value

The plant extract from the Cassia Alata gives the coating paint film an antifungal property.

Details

Pigment & Resin Technology, vol. 50 no. 2
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 15 November 2024

Wahyudi Wibowo, Yanedi Jagau, Standy Christianto and Kusni Sulang

This study aims to investigate the feasibility of a community-based non-timber forest products (NTFP) enterprise, or CBNE, within the indigenous peasant communities in Manuhing…

17

Abstract

Purpose

This study aims to investigate the feasibility of a community-based non-timber forest products (NTFP) enterprise, or CBNE, within the indigenous peasant communities in Manuhing Raya, Central Kalimantan, Indonesia. This includes assessing the potential for generating featured agricultural products from the region.

Design/methodology/approach

This is a descriptive qualitative study that integrates ethnographic methods into the SLA analysis, to investigate the feasibility of a CBNE approach within an indigenous peasant community. A number of 13 peasant groups, which comprise 251 members, from the seven villages in Manuhing Raya participated in the study.

Findings

The CBNE approach, when combined with One Village One Product method, is considered appropriate for the determination of featured agricultural products in a local community. In addition, the SLA analysis in this study contributes to identifying vulnerable aspects of CBNE development in the local communities, including weaknesses in social cohesion, leadership and entrepreneurial orientation.

Research limitations/implications

Efforts to preserve the rainforest lands in Central Kalimantan cannot be excluded from the involvement of the local peasant communities. The best livelihood strategy in this case is to adopt a CBNE approach. This shall be made possible by empowering the peasant communities to revive their local wisdom of Upun Pambelum, which means forest lands are their primary resources for life.

Practical implications

This study highlights the importance of using ethnographic investigation prior to the implementation of a CBNE development.

Originality/value

The implementation of the CBNE approach should take into account socioeconomic aspects of the local community, especially the presence of social cohesion, leadership roles and entrepreneurial orientations. In addition, the study demonstrates the potential of integrating traditional ecological knowledge with modern business models in CBNEs.

Details

Journal of Enterprising Communities: People and Places in the Global Economy, vol. 18 no. 6
Type: Research Article
ISSN: 1750-6204

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Article
Publication date: 14 June 2022

Achraf Haddad

The purpose of this research is to compare the board quality's (BQ) impacts on the financial performance (FP) of conventional and Islamic banks (IBs) after the Subprime financial…

733

Abstract

Purpose

The purpose of this research is to compare the board quality's (BQ) impacts on the financial performance (FP) of conventional and Islamic banks (IBs) after the Subprime financial crisis. The main reason is to help financial stakeholders choose the best performing and most appropriate bank type with its engagement based on the BQ index.

Design/methodology/approach

Based on the existing gap in previous researches and by using the GLS method (Generalized Least Squares method), the author compared the BQ's impacts on the FP of conventional and IBs. Settings of the FP and BQ were collected from 30 countries located on 4 continents. Two equal samples were tested; each of them is composed of 112 banks. The author concentrated only on the banks that have published regularly the banks' annual reports over the period 2010–2018.

Findings

Cylindrical panel results revealed that in conventional banks (CBs), the BQ has negatively affected banks' FP, while in IBs the BQ's impacts on the banks’' FP is ambiguous. Nevertheless, the positive impacts are more significant on the IBs' FP than the negative impacts on the IBs' FP.

Practical implications

The main practical contribution is the identification and distinction between the impacts of board determinants' quality on the shareholders' profits in the case of conventional and IBs. Hence, conventional or IBs which have a bad BQ will generate less FP and will be classified as a lender of bankruptcy danger for the bank customer. Besides, whatever the bank type, in a financial stable period, good BQ positively influences FP and provides a good impression to stakeholders. Otherwise, FP indicates that the banks suffer from the weaknesses of the board quality determinants.

Originality/value

Returning to the finance and banking governance literature, the author's article provides the first conditional and demonstrative analysis that detailed a logical comparative process to analyze the correlation between the board determinants' quality and the financial performance of conventional and IBs. However, previous research has always discussed the main role of the board as an internal governance mechanism on the FP separately in each bank type.

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Article
Publication date: 31 May 2022

Omar Kachkar and Mustafa K. Yilmaz

This study aims to examine diversity in the composition of Shariah supervisory boards (SSBs) of Islamic banks (IBs). It investigates diversity from two perspectives: existing…

573

Abstract

Purpose

This study aims to examine diversity in the composition of Shariah supervisory boards (SSBs) of Islamic banks (IBs). It investigates diversity from two perspectives: existing composition of SSBs and the regulatory frameworks and standards of selected Organisation of Islamic Cooperation countries. Diversity characteristics include education, nationality, gender and age.

Design/methodology/approach

A list of all full-fledged Islamic commercial banks (FFICBs) globally has been carefully prepared and confirmed. Conventional banks with Islamic windows, non-commercial banks, takaful companies and other Islamic financial institutions are excluded. The available profiles of 428 SSB members have been scrutinised and analysed. These board members occupy 522 SSB positions in 238 FFICBs operating in 52 countries around the globe. From the regulatory perspective, 12 national and international Shariah governance frameworks and standards have been examined.

Findings

Findings of this paper indicate various levels of diversity in SSBs of the reviewed IBs. The level of diversity in educational background and in the nationality of SSBs can be described as generally acceptable. However, a lack of diversity in gender and age among SSB members is evidently observed in IBs. While the lack of age diversity in SSBs may be relatively justified as a common trend in the composition of corporate boards, SSBs of IBs are seriously lagging behind in gender diversity. On the regulatory level, this study concluded that provisions on diversity as a requirement in SSBs are almost non-existent in the existing regulatory frameworks and standards.

Research limitations/implications

The major limitation of this study is the lack of available information on the SSB members.

Practical implications

This paper provides insights for IBs and policymakers concerned with the corporate governance of IBs and all Islamic financial institutions. First, it offers an excellent bird’s-eye view of the status of diversity in SSBs of IBs. Second, it motivates policymakers and standard-setting bodies to ensure, through the relevant regulatory frameworks, adequate levels of diversity in the composition of SSBs. Diversity in SSBs of IBs and Islamic financial institutions should be given special emphasis, not only in boards and top management positions but also in the workplace. This is of profound significance to the reputation of Islamic finance industry which has been recently under mounting pressure to translate the rhetoric about the Islamic finance industry being ethical, fair, just, equitable and inclusive into genuine implementations.

Originality/value

To the best of the authors’ knowledge, this study is the first of its kind to examine the diversity of SSB members from the regulatory as well as from the implementation perspective.

Details

International Journal of Ethics and Systems, vol. 39 no. 2
Type: Research Article
ISSN: 2514-9369

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Article
Publication date: 29 October 2024

Roentgen Galaroza Dipon and Emerson G. Cabudol

This study was conducted to assess the alignment of the strategic plans of the Cavendish banana grower cooperatives to business excellence models (BEMs) and to determine its…

18

Abstract

Purpose

This study was conducted to assess the alignment of the strategic plans of the Cavendish banana grower cooperatives to business excellence models (BEMs) and to determine its financial impact to elucidate the performance of the respective cooperatives. This is anchored on the primary objectives of cooperative business sustainability, expansion and sustained competitiveness, all of which are significantly impacted by the strategic plans. The BEMS establish the parameters that are useful in determining how well the strategic plans correspond.

Design/methodology/approach

Qualitative and quantitative methods were used in this study. Strategic plans and audited financial statements (FS) for calendar year (CY) 2021 and 2022 of two Cavendish banana grower cooperatives in Region XI on the context of BEMs were evaluated and examined using the Malcolm Baldrige National Quality Award and Philippine Quality Award. Of the seven criteria, only five were considered as follows: organizational profile, leadership, strategy, workforce, process and result. The first four were taken from strategic plans, while result was from audited FS.

Findings

The strategic plans of the two cooperatives selectively satisfy some of the sub-criteria of each of the four criteria. Furthermore, the cooperatives followed the usual basic contents of and briefly presented in the strategic plans the strengths, weaknesses, opportunities and threats (SWOT) analysis, strategic objectives, plans, targets and timelines. This suggests that the cooperatives are not familiar with the BEMs which could be attributed to the educational qualifications of the directors and officers, or possibly not introduced by the Cooperative Development Authority (CDA). On the financial performance, one cooperative has impressive records but generally had lower performance in 2022 compared to 2021.

Research limitations/implications

This study covers only Cavendish banana grower cooperatives particularly located in the Southeastern part of Mindanao (CDA, 2021) in the Philippines where people are mostly of similar culture. This does not represent much diverse culture; thus, this may work only in organizations with similar culture. In other industries or organizations where cultural diversity occurs, there may be a need to conduct study to determine the level of adoption of BEMs by the cooperatives. On the other note, the samples are very limited that generalizability cannot be made. Conducting a similar study involving many cooperatives is suggested.

Originality/value

This study explores the alignment of the Strategic Plans of the Cavendish banana grower cooperatives to BEMs which has long been neglected.

Details

The TQM Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1754-2731

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