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Article
Publication date: 30 August 2019

Jia Xu, Jingyu Zhang, Jiahan Xu, Guangyuan Miao, Long Feng, Zhanzhu Zhang and Huanxia Zhang

Nanotechnology has been able to bind to a wide range of functional textiles in recently. This paper aims to modify graphene oxide (GO) by grafting dimethyl phosphite and…

Abstract

Purpose

Nanotechnology has been able to bind to a wide range of functional textiles in recently. This paper aims to modify graphene oxide (GO) by grafting dimethyl phosphite and perfluorohexyl iodine. It was applied to cotton to obtain a flame-retardant, water-repellent and ultraviolet-resistant multifunctional fabric.

Design/methodology/approach

The GO-multi was synthesized by grafted dimethyl phosphite and perfluorohexyl chain and applied to cotton by the dipping-drying method. The surface chemistry of functionalized GO was characterized by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The thermal stability of the fabric was characterized by thermogravimetric analysis (TGA). The combustion properties were evaluated using a microscale combustion calorimeter, match test and TGA. Hydrophobicity of film and fabric surface was characterized by static contact angle, and the UV resistance of the fabric was represented by the ultroviolet procetion factor (UPF) value.

Findings

Dimethyl phosphite and perfluorohexyl chains were grafted on the surface of GO successively. In the match test, the GO-multi/cotton kept the original outline of the fabric. According to the micro-scale combustion calorimetry (MCC) data, the value of PHRR and THR of GO-multi/cotton was about 45 per cent lower than that of untreated cotton fabric. It was found from the field-emission scanning electron microscopy (SEM) pictures that the residue of GO-multi/ cotton burned by the match method was more compact and the graphene lamellar structure remained more complete. The hydrophobic effect of GO-multi/cotton was improved compared to untreated cotton, but not better than the fabric treated by the perfluorohexyl chain-grafted GO. The UPF value of GO-multi/cotton reached 253, which indicated that the anti-ultraviolet performance of GO-multi was greatly improved after it was deposited on the cotton fabric.

Research limitations/implications

Although the hydrophobic effect was much higher than that of untreated cotton fabric, its hydrophobic effect was not satisfied, which may be due to the fact that the content of F element content was low. So, it is still needed to explore the modifying method to increase the functional component amount on the GO nanosheet.

Practical implications

This modifying method can be used in any of multifunctional textile preparation process. The hydrophobic and flame-retardant cotton fabric revealed a sample for use in outdoor sports such as clothes and tents.

Originality/value

To meet the needs of multifunctional cotton fabrics, the modification of GO with dimethyl phosphite and perfluorohexyl iodine has not been reported. The modified fabric has flame-retardant, UV-resistant and hydrophobic properties.

Details

Pigment & Resin Technology, vol. 48 no. 6
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 25 November 2019

Jia Xu, Jing Yu Zhang, Jiahan Xu, Yuqi Chang, Feilong Shi, Zhanzhu Zhang and Huanxia Zhang

One of the intensively developed in recent years new materials are hybrid textiles modified with carbon nanotubes (CNT). In this paper, CNTs was modified by grafting dimethyl…

Abstract

Purpose

One of the intensively developed in recent years new materials are hybrid textiles modified with carbon nanotubes (CNT). In this paper, CNTs was modified by grafting dimethyl phosphite and perfluorohexyl iodine. It was applied to the cotton to obtain the flame-retardant, water-repellent, ultraviolet-resistant and conductive multifunctional fabric.

Design/methodology/approach

The modified CNTs were loaded onto cotton fabric by impregnation and drying. The CNTs-multi was synthesized by grafted dimethyl phosphite and perfluorohexyl chain and applied to the cotton by dipping-drying method. The surface chemistry of functionalized CNTs was characterized by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy (XPS). The combustion properties were evaluated using a microscale combustion calorimeter, match test and TGA analysis. Surface hydrophilicity and hydrophobicity of fabric surface was characterized by static contact angle, and the UV resistance of the fabric was represented by the UPF value.

Findings

Dimethyl phosphite and perfluorohexyl chain were grafted on the surface of CNTs successively. The quantity of each component on the surface of CNTs was calculated according to XPS results. According to miniature combustion calorimeter data, both the value of maximum heat release rate (PHRR) and total heat release (THR) of CNTs -multi/cotton was about 65% lower than that of untreated cotton fabric. The residue after combustion of CNTs -multi/ cotton in the match test was more compact. The electrical conductivity of multi/ cotton is 225.6 kΩ/□, which is better than that of untreated cotton fabric. The UPF value of CNTs-multi/cotton reached 121, which was indicated that the anti-ultraviolet performance of CNTs-multi was greatly improved.

Research limitations/implications

Modifying method to increase the functional component amuount on the CNTs surface still need to be explored, which could increase the hydrophobicity. How to further improve the functional effect and the general synthetic steps will be of great significance to the preparation of multifunctional modified cotton fabric.

Practical implications

This modifying method can be used in any of multifunctional textile preparation process. The UV-resistant and flame retardant cotton fabric was revealed as a sample for use in outdoor sports such as clothes and tents.

Originality/value

To meet the needs of multifunctional cotton fabric, the modification of CNTs with dimethyl phosphite and perfluorohexyl iodine has not been reported. The modified fabric has flame-retardant, UV-resistant conductive and conductive properties.

Details

Pigment & Resin Technology, vol. 49 no. 1
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 4 February 2025

Chunbo Lin, Wenbin Xu, Yuxiong Guo, Chengyong Shi, Jianbo Huang, Taisheng Wang, Hongxin Zhang, Zhankun Weng and Jia Xu

In this paper, a dynamic projection scanning lithography (DPSL) technology and system is proposed to achieve cross-scale 3D printing, addressing the limitations of the traditional…

Abstract

Purpose

In this paper, a dynamic projection scanning lithography (DPSL) technology and system is proposed to achieve cross-scale 3D printing, addressing the limitations of the traditional 3D printing methods that struggle to achieve both large build volumes and high precision. The method achieves a printing accuracy of 10 µm within a build volume of 100 × 100 × 100 mm, and successfully fabricates complex hollow structures and functional models.

Design/methodology/approach

DPSL uses a digital micromirror device (DMD)-based digital projector to generate light patterns for light-curing printing. The light patterns are created by sequentially loading the print design frame by frame, forming dynamic light patterns that are scanned line by line across the material surface for solidifying the printing materials. By controlling the scanning range of the digital projector, it is theoretically able to print models of any size. Additionally, by using DMD oblique scanning, the impact of the DMD micromirrors’ shape and arrangement on print accuracy is addressed by overlapping exposures along the scanning direction of the digital projector.

Findings

This study shows the printing system resolution of 1.3 µm, while the maximum size of the printing model depends on the system scanning range. Additionally, by using DMD oblique scanning, the impact of the DMD micromirrors’ shape and arrangement on print accuracy is addressed by overlapping exposures along the scanning direction of the digital projector.

Originality/value

This work demonstrates that DPSL based on oblique scanning technology is used to achieve 3D printing with high precision, large area and smoother surface. In addition, a rigid release method is used to achieve a precise printing layer thickness in the top-down printing process. By adhering the release film to the bottom surface of the glass and adjusting the descent distance of the stage for each layer, uniform layer thickness can be achieved for each exposure.

Details

Rapid Prototyping Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 17 May 2022

Yang Yang, Jia Xu, Jonathan P. Allen and Xiaohua Yang

This study examines the impact of formal and informal institutional distances on the foreign ownership strategies of emerging market firms (EMFs).

Abstract

Purpose

This study examines the impact of formal and informal institutional distances on the foreign ownership strategies of emerging market firms (EMFs).

Design/methodology/approach

This is an empirical study relying on two sets of data collected over two time periods, 2006–2008 and 2017–2019, for publicly-listed Chinese companies.

Findings

Greater formal institutional distances in the host and home countries make EMFs less likely to use joint ventures (JVs), while greater informal distances make EMFs more likely to use the JVs. When both formal and informal institutional distances are high, the use of JVs is more likely. These results are affected by the goal of the foreign direct investment (FDI) project, with strategic asset-seeking (SAS) FDI projects favoring the use of wholly owned subsidiaries (WOSs).

Research limitations/implications

This study relies on cross-sectional data from publicly-listed Chinese companies, which may limit the generalizability of the findings.

Practical implications

EMFs investing in advanced countries should carefully assess the tradeoffs between transactional cost efficiency and legitimacy in making their foreign ownership decisions. If the goal is to access strategic assets, EMFs should consider WOSs to ensure the transfer of strategic assets and create value for the parent company.

Originality/value

The findings show that formal and informal distances between institutions have different impacts on foreign ownership strategies, providing empirical evidence for the need to balance conflicting cost-efficiency and legitimacy considerations when businesses make such strategic decisions. The authors show how this balance depends on the goal of the FDI project.

Details

International Journal of Emerging Markets, vol. 18 no. 12
Type: Research Article
ISSN: 1746-8809

Keywords

Article
Publication date: 15 September 2022

Shumei Chen and Jia Xu

This paper aims to theoretically and empirically demonstrate the role played by business continuity management (BCM) to address risks such as trade conflicts and natural…

1148

Abstract

Purpose

This paper aims to theoretically and empirically demonstrate the role played by business continuity management (BCM) to address risks such as trade conflicts and natural disasters. This paper also answers whether compliance with international standards such as the International Organization for Standardization (ISO) 22301 is adequate.

Design/methodology/approach

A case study of Chinese telecommunications giant Huawei is conducted to examine how a robust end-to-end BCM system has been established in two decades and in what way it has helped Huawei to efficiently maintain growth under pressure, such as being added to the “Entity List” and the pandemic.

Findings

Huawei case contributes to BCM theory in its approach to establishing the BCM system and its well-established BCM model. Huawei establishes and continually improves its BCM system by applying the Plan (establish), Do (implement and operate), Check (monitor and review) and Act (maintain and improve) cycle. Characterized as 4Ps: BCM policy, BCM process, incident management plan and business continuity plan, Huawei BCM system is shaped into a loop with end-to-end BCM process, covering all steps along its value chain – from suppliers and partners to Huawei itself and then on to its customers – with key initiatives for all domains such as R&D, procurement, manufacturing, logistics and global technical services. In practice, implementing international standards such as ISO 22301 enables Huawei to develop business continuity but not enough. Optimizing the BCM system is an ongoing effort, and BCM maturity is ever present: continually improving Huawei’s own BCM system and benchmarking against best practices available worldwide.

Research limitations/implications

Apart from the case study, other methods such as counter-factual analysis can be used to further test whether Huawei’s BCM system is cost-effective. Another direction for future study is whether suggested BCM maturity levels should be supplemented into ISO 22301. In the digital age, how to use digitalization to ensure business continuity is a current issue not just for practitioners such as Huawei but also for researchers worldwide.

Practical implications

In practice, implementing international standards such as ISO 22301 enables Huawei to develop business continuity but not enough. Optimizing the BCM system is an ongoing effort, and BCM maturity is ever present: continually improving Huawei’s own BCM system and benchmarking against best practices available worldwide.

Originality/value

To the best of the authors’ knowledge, this is one of the first studies to focus on how an organization continually improves the suitability, adequacy and effectiveness of its BCM system, with special attention to standards compliance.

Details

Chinese Management Studies, vol. 17 no. 5
Type: Research Article
ISSN: 1750-614X

Keywords

Article
Publication date: 18 May 2018

Rui Li, Jia Xu, Mingshan Zhou and Tianyu Wang

In accordance with the traditional ranking of “scholar, farmer, artisan and merchant” in China, entrepreneurs are characterized as having lower social status, and are driven by…

Abstract

Purpose

In accordance with the traditional ranking of “scholar, farmer, artisan and merchant” in China, entrepreneurs are characterized as having lower social status, and are driven by face consciousness to engage in conspicuous consumption. Education is not only a human capital investment but also a conspicuous consumption good. This study aims to investigate how entrepreneurial households manage their education expenditure differently from non-entrepreneurial households and what the underlying mechanism is.

Design/methodology/approach

Using Chinese Household Finance Survey 2011 data, this study empirically examines the education expenditure differentials between entrepreneurial and non-entrepreneurial households. Regression analyses on matched samples are carried out and the results are quite robust across different model specifications.

Findings

On the basis of the empirical analysis, this study finds that entrepreneurial households annually spend 19.30 per cent more on education than non-entrepreneurial households. The empirical results provide no evidence that education generates a greater increase in income for entrepreneurial households than for their non-entrepreneurial counterparts, which indicates that the education expenditure differentials do not result from different income returns to education. The findings show that education is a conspicuous good and the gap in education expenditure is partially attributable to different demands for the conspicuous consumption, which results from different face consciousness between the two kinds of households.

Originality/value

The results of this study reveal the significance and economic consequences of face consciousness for entrepreneurial households from the perspective of education.

Details

Chinese Management Studies, vol. 12 no. 3
Type: Research Article
ISSN: 1750-614X

Keywords

Abstract

Details

International Journal of Operations & Production Management, vol. 44 no. 9
Type: Research Article
ISSN: 0144-3577

Article
Publication date: 26 August 2024

Beth G. Chung, Lynn M. Shore, Justin P. Wiegand and Jia Xu

This study examines the effects of an inclusive psychological climate on leader inclusion, workgroup inclusion, and employee outcomes (trust in organization and organizational…

Abstract

Purpose

This study examines the effects of an inclusive psychological climate on leader inclusion, workgroup inclusion, and employee outcomes (trust in organization and organizational identification). Leader inclusion and workgroup inclusion are explored as both direct and serial mediators in the psychological climate to outcome relationships.

Design/methodology/approach

Data from 336 employees in 55 teams were collected at two time points from an educational media company in China.

Findings

Results from multi-level modeling suggest that, for employees, the inclusive psychological climate to trust relationship has both direct and indirect effects, including a serially occurring indirect effect through leader inclusion and workgroup inclusion. For the inclusive psychological climate to organizational identification relationship, there were only indirect effects, including a serially occurring indirect effect through both leader inclusion and workgroup inclusion.

Research limitations/implications

These results suggest the value of an inclusive psychological climate for setting the stage for more localized inclusion experiences through the leader and the workgroup. These inclusionary work environments promote social exchange as shown by employer trust and social identification with the organization.

Originality/value

This study examines the combined and serial effects of an inclusive psychological climate, leader inclusion, and workgroup inclusion on outcomes that represent a deep connection with the organization (organizational trust and organizational identification).

Details

Equality, Diversity and Inclusion: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-7149

Keywords

Article
Publication date: 11 April 2022

Xinchao Zhang, Huanxia Zhang, Danni Pan, Wen Wu, Hui Ma, Jianda Cao and Jia Xu

This paper aims to determine whether application of graphene layers to cuprammonium filaments affords the latter with excellent mechanical properties and improves their electrical…

79

Abstract

Purpose

This paper aims to determine whether application of graphene layers to cuprammonium filaments affords the latter with excellent mechanical properties and improves their electrical properties. At the same time, a circuit model was established to explore the conductive mechanism of the filament. The actual model is used to verify the correctness of the model.

Design/methodology/approach

The cuprammonium filaments were desizing, the graphene oxide layer-by-layer sizing and reduction integration process by a continuous sizing machine. The electrical properties of mono- and multifilaments in the static condition, as well as the dynamic–mechanical properties of multifilaments, were analysed, and the related conductive mechanism of the filaments was deduced.

Findings

Cuprammonium filaments coated with graphene layers showed good electrical conductivity, and their volume resistance decreased to 4.35 O·cm with increasing number of graphene coats. The X-ray diffraction and thermogravimetric analysis results showed that the graphene layer treatment changed the crystallinity of the copperammonia filaments and improved the thermal stability of the filaments. In the dynamic case, filament resistance was calculated using the equivalent resistance model, and the fitting difference observed was small. This result confirmed the high fit of this circuit model.

Originality/value

Up to the knowledge from literature review, there are no reports on theoretical research on the relation between the electro-mechanical property and structure of conductive filaments.

Details

Pigment & Resin Technology, vol. 51 no. 4
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 15 May 2018

Tang Li, Yue Deng, Xu Jia and Zeyu Wang

Labor conflict has become a serious problem in recent China. From the perspective of entrepreneur innovation, this paper aims to find an effective path to eliminate this conflict…

Abstract

Purpose

Labor conflict has become a serious problem in recent China. From the perspective of entrepreneur innovation, this paper aims to find an effective path to eliminate this conflict. On the basis of theoretical analyses and regression analyses, this paper finds that, with legal environment and other conditions identical, entrepreneur innovation will significantly facilitate elimination of labor conflicts.

Design/methodology/approach

Using theoretical analyses based on entrepreneurship theory, this paper puts forward a series of hypotheses about the effects of entrepreneur innovation on labor conflicts. With panel data during 2013-2015 from China Employer–Employee Survey, this paper examines the effects of entrepreneur innovation on labor conflicts. Using interaction term regressions, this paper examines heterogeneous effects of entrepreneur innovation on labor conflicts by ownership, market power and export behavior. With mediating effect model, this paper examine whether workers’ participation in corporation governance is an important channel in which entrepreneurial innovation can impact on labor conflicts.

Findings

First, using benchmark regressions and robustness checks, this paper finds that there exist significantly positive effects of entrepreneur innovation on workers’ job satisfaction, incentive, social security, job development and job stability, which will reduce potential risks of labor conflict effectively. Second, using interaction term regressions, this paper finds that there exist heterogeneous effects of entrepreneur innovation on labor conflicts by ownership, market power and export behaviors. The study finds that the effects of entrepreneur innovation are more concentrated in private firms, firms with stronger market power and non-exporters. Third, using a mediating effect model, the study finds that workers’ participation in corporation governance is an important channel in which entrepreneur innovation can have impacts on labor conflicts.

Originality/value

The paper enriches the existing research about how to eliminate labor conflicts in China. On the basis of China Employer–Employee Survey data, this paper finds the importance of entrepreneur innovation on Chinese transition, which not only has positive impacts on firm performance, but also has impacts on eliminating labor conflicts and establishing better labor relationship. Therefore, stimulating entrepreneur innovation is very important for solving conflicts during Chinese transition.

Details

International Journal of Conflict Management, vol. 29 no. 5
Type: Research Article
ISSN: 1044-4068

Keywords

1 – 10 of over 4000