نوارهای کامپوزیت سازگار با محیط زیست
ترجمه نشده

نوارهای کامپوزیت سازگار با محیط زیست

عنوان فارسی مقاله: یک تکنیک جدید در تهیه نوارهای کامپوزیت فیبر تارچه ابریشم / نانوفیبر سلولزی سازگار با محیط زیست با خواص حرارتی و مکانیکی بهبود یافته
عنوان انگلیسی مقاله: A novel technique in the preparation of environmentally friendly cellulose nanofiber/silk fibroin fiber composite films with improved thermal and mechanical properties
مجله/کنفرانس: مجله تولید پاک – Journal of Cleaner Production
رشته های تحصیلی مرتبط: زیست
گرایش های تحصیلی مرتبط: بیوشیمی
کلمات کلیدی فارسی: تارچه ابریشم، نانوفیبر، نوار کامپوزیت، خردکننده
کلمات کلیدی انگلیسی: Silk fibroin، Nanofiber، Composite film، Grinder
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.jclepro.2019.06.215
دانشگاه: Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 7.096 در سال 2018
شاخص H_index: 150 در سال 2019
شاخص SJR: 1.620 در سال 2018
شناسه ISSN: 0959-6526
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 8
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12843
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


Graphical abstract


1. Introduction


2. Materials and methods


3. Results and discussion


4. Conclusions


Acknowledgements


Appendix A. Supplementary data


Research Data


References

نمونه متن انگلیسی مقاله

Abstract


In this paper, we report a novel technique which enabled us to easily and directly obtain a silk fibroin (SF) solution without the use of organic solvents by applying a simple grinder for silk cocoons. In addition, we successfully prepared cellulose nanofiber/silk fibroin (CNF/SF) nanofiber composite films using a filtration and pressing method from a slurry solution blended with a CNF solution. The peak temperature of the thermal decomposition of the SF nanofibers prepared using the new method developed in this research was improved by more than 13 °C, and that of the composite films compounded with more than CNF 50 wt% showed almost the same temperature as the CNF film. In addition, the mechanical properties of the CNF/SF nanofiber composite films were increased with increasing the amount of CNF. These results strongly suggest that the SF solution prepared using our novel method has advantages of superior thermal and mechanical properties compared with that prepared by a conventional method using a concentrated neutral salt solution. Additionally, this result indicates the film manufacturing method having advantages of water pollution reduction and energy saving.


Introduction


Fibroin is a type of fibrous protein, occupying 70% of the cocoon yarns of insects and spiders, and is a major component in the silk thread of silkworms. In particular, silk fibroin (SF) obtained from domesticated silkworms has been considered in numerous studies, focusing on its detailed molecular structure and higher-order structural changes, its use in artificial skin and culture substrates, its biocompatibility, and its application in supplements, among other areas (Bhardwaj and Kundu, 2011; Chen et al., 2014; Jin et al., 2013; Lee et al., 2018; Mehrabani et al., 2018; Zhou et al., 2017). SF forms a strong hydrogen bond between molecular chains, takes an antiparallel b-sheet type crystal structure, and is insoluble in water (Lu et al., 2010). Therefore, to produce films and nanofibers, it is necessary to prepare an aqueous solution by dissolving the SF in an organic solution and then dialyzing it. In a traditional dissolution method of silk fibroin, the material is dissolved in a concentrated neutral salt solution; the solution is then placed in a cellulose tube and dialyzed with pure water for about 1 week to remove any existing ions (Du et al., 2009; Yamada et al., 2003; Zhu et al., 2012). The higher-order structure of SF in an aqueous solution obtained through this method is of a random coil type (Yamada et al., 2003). However, this sample preparation procedure is very complicated and lengthy, and furthermore it necessitates the use of an organic solvent. From the viewpoint of environmental compatibility and economic efficiency, preparation of bio-based materials in a short time without using organic solvents is strongly desired.

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