Budi Arifvianto, Yuris Bahadur Wirawan, Urip Agus Salim, Suyitno Suyitno and Muslim Mahardika
The purpose of this study is to investigate the influences of extruder temperatures and raster orientations on the mechanical properties of polylactic-acid (PLA) material…
Abstract
Purpose
The purpose of this study is to investigate the influences of extruder temperatures and raster orientations on the mechanical properties of polylactic-acid (PLA) material processed by using fused filament fabrication (FFF).
Design/methodology/approach
In this research, the PLA specimens were first printed with nozzle or extruder temperatures of 205°C, 215°C and 225°C and then evaluated in terms of their physical, chemical and mechanical properties. An appropriate extruder temperature was then selected based on this experiment and used for the printing of the other PLA specimens having various raster orientations. A series of tensile tests were carried out again to investigate the influence of raster orientations on the tensile strength, tensile strain and elastic modulus of those FFF-processed PLA materials. In the end, the one-way ANOVA was applied for the statistical analysis and the Mohr’s circle was established to aid in the analysis of the data obtained in this experiment.
Findings
The result of this study shows that the chemistry, porosity, degree of crystallinity and mechanical properties (tensile strength, strain and elastic modulus) of the PLA material printed with a raster angle of 0° were all insensitive to the increasing extruder temperature from 205°C to 225°C. Meanwhile, the mechanical properties of such printed PLA material were obviously influenced by its raster orientation. In this case, a PLA material with a raster orientation parallel to its loading axis, i.e. those with a raster angle of θ = 0°, was found as the strongest material. Meanwhile, the raster configuration-oriented perpendicular to its loading axis or θ = 90° yielded the weakest PLA material. The results of the tensile tests for the PLA material printed with bidirectional raster orientations, i.e. θ = 0°/90° and 45°/−45° demonstrated their strengths with values falling between those of the materials having unidirectional raster θ = 0° and 90°. Furthermore, the result of the analysis by using a well-known Mohr’s circle confirmed the experimental tensile strengths and the failure mechanisms of the PLA material that had been printed with various raster orientations.
Originality/value
This study presented consistent results on the chemistry, physical, degree of crystallinity and mechanical properties of the FFF-processed PLA in responding to the increasing extruder temperature from 205°C to 225°C applied during the printing process. Unlike the results of the previous studies, all these properties were also found to be insensitive to the increase of extruder temperature. Also, the result of this research demonstrates the usability of Mohr’s circle in the analysis of stresses working on an FFF-processed PLA material in responding to the changes in raster orientation printed in this material.
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Hendy Mustiko Aji, Albari Albari, Muchsin Muthohar, Sumadi Sumadi, Murwanto Sigit, Istyakara Muslichah and Anas Hidayat
This study aims to investigate Muslims’ online infaq intention during COVID-19 deadly outbreak. This study examined the model comprising two major theories, namely, the theory of…
Abstract
Purpose
This study aims to investigate Muslims’ online infaq intention during COVID-19 deadly outbreak. This study examined the model comprising two major theories, namely, the theory of reasoned action (TRA) with additional Muslim intrinsic religiosity and social presence theory (SPT).
Design/methodology/approach
A structural equation modeling (SEM) approach is used to test the measurement and structural model. In the structural model, SEM is chosen due to its effectivity in estimating direct and indirect effects in a single model. An online questionnaire is distributed to respondents who are purposively selected all over Indonesia regions comprising all major islands. In total, there are 571 respondents collected; however, only 560 of them are usable.
Findings
This study shows that all hypotheses generated from the TRA and SPT significantly affect online infaq intention. Surprisingly, Muslim intrinsic religiosity does not affect both attitude toward online infaq and online infaq intention. To further explain the result, a post hoc analysis is conducted. Accordingly, it is found that Muslim intrinsic religiosity has an indirect significant effect on online infaq intention through social presence.
Research limitations/implications
This study has several limitations. First, even though the sample already represented all parts of Indonesia, the sample is distributed mainly to those live in Java Island. Second, due to its difficulty in pursuing proportional distribution of the sample, the results are more subjective to more dominant respondent demographics. Third, this study captures cross-sectioned phenomena of an online infaq intention during COVID-19 pandemic. Fourth, as the topic of this study is concerned about Islamic charity, the Qur’an- and sunnah-based research framework will make this study more valuable. However, such a framework has not been widely developed.
Practical implications
This study provides a managerial implication for online infaq fundraisers in Indonesia, in which trustworthiness and “social touch” are important to drive the Muslims in making a monetary donation. The online infaq can be an efficient Islamic philanthropic tool to solve social problems during the COVID-19 outbreak. Therefore, the central authority should encourage profit and non-profit social organizations in Indonesia to make a strategic collaboration in providing online infaq service and its distribution. Collaboration may increase perceived trust and social presence.
Originality/value
Due to a limited study on the topic of online infaq behavioral intention during COVID-19 situation, therefore, this study provides added value to the literature by examining factors determining online infaq intention during COVID-19 pandemic in Indonesia. This study combines the extended TRA and SPT in a single model.
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Tzong-Ru Lee, Yong-Shun Lin, Erne Suzila Kassim and Stephanie Sebastian
The main objective of this research is to investigate the factors that influence consumer purchase decisions for halal products before and during the COVID-19 pandemic, based on…
Abstract
Purpose
The main objective of this research is to investigate the factors that influence consumer purchase decisions for halal products before and during the COVID-19 pandemic, based on the Engel-Kollat-Blackwell (EKB) theory.
Design/methodology/approach
The research was conducted as a survey. The influencing factors were determined based on the grey relational analysis (GRA) approach.
Findings
The findings indicate before the COVID-19 pandemic, consumers mainly purchased halal products based on four key factors: purchasing experience, certification label, Internet searches and past consumption experience. However, during the pandemic, the ranking and factors have changed to six indicators, which are past consumption experience, purchasing experience, certification labels, standardized specifications, Internet searches and halal certification labels.
Research limitations/implications
The study was limited by the sample size and geographical area. Nevertheless, the findings could be further explored by expanding related theories toward understand human decisions based on spiritual beliefs.
Practical implications
The findings of this study have important implications for research, practice and society. Understanding the factors influencing halal purchase decisions before and during the pandemic can help businesses, policymakers and halal certification bodies to better cater to consumers' needs and preferences and ensure the continued growth and development of the halal industry.
Originality/value
This study evaluates halal purchasing decisions between periods of certainty and uncertainty by using the GRA. Changes in halal consumption and purchase decisions in response to COVID-19 pandemic have become an emerging topic of discovery. The study addresses the gap in the literature regarding changes in consumer decision pattern.
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Budi Trianto, Nik Hadiyan Nik Azman and Masrizal Masrizal
The development of financial technology (fintech), especially digital payments (e-payments), aims to increase the efficiency and effectiveness of economic transactions. This study…
Abstract
Purpose
The development of financial technology (fintech), especially digital payments (e-payments), aims to increase the efficiency and effectiveness of economic transactions. This study aims to see the extent to which microentrepreneurs in Indonesia and Malaysia take advantage of the existence of e-payments in developing their business and the factors that influence the adoption of e-payments.
Design/methodology/approach
This study uses qualitative and quantitative approach. For quantitative approach, partial least squares structural equation modeling (PLS-SEM 4.0) was used to analyze the data. Using the nonprobability convenient sampling technique, this study collected 400 respondents from microenterprises in Indonesia and Malaysia in various regions.
Findings
Most of the microentrepreneurs in Indonesia and Malaysia have used fintech platforms, especially e-wallet and ATM debit. However, for quick response code-based fintech for business transactions, most microentrepreneurs have not taken advantage of the platform. Then the results of the digital payment adoption factor also differ for each country.
Research limitations/implications
This study is valuable for decision-makers and regulators. These results can be used to find a roadmap for regulators to build a digital economy, especially digital payments for microenterprises in both countries. In addition, these results can be used as a basis for making policies regarding digital payments.
Originality/value
To the best of the authors’ knowledge, this is the first study to compare e-payment adoption by microentrepreneurs in Indonesia and Malaysia. Indonesia and Malaysia are two countries in the Southeast Asia region that have great attention in fintech development. This study provides new insights about fintech, especially digital payments as a strategic approach in the digitalization era.
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Halimin Herjanto, Muslim Amin, Elizabeth Purinton and Edward L. Lindle II
Based on the learning and attitudinal theories, this study aims to investigate the direct effect of two type of experiences, attitude and the indirect impact of fashion…
Abstract
Purpose
Based on the learning and attitudinal theories, this study aims to investigate the direct effect of two type of experiences, attitude and the indirect impact of fashion innovativeness, materialism and financial pressure on Generation Z’s secondhand clothing (SHC) purchase intention.
Design/methodology/approach
A total of 180 usable surveys were gathered from Generation Z participants and analyzed by a partial least-square-structural equation model.
Findings
The results show that attitude (SHC hygiene vs SHC fashion style) and past experiences (daily use occasion vs particular use occasion) directly affect SHC purchase intention. Furthermore, materialism, financial pressure and innovativeness drive attitudes toward SHC fashion style.
Originality/value
This study extends the current SHC literature by integrating two dimensions of experience (daily use occasion vs particular use occasion) and attitude (attitude toward SHC hygiene vs attitude toward SHC style).