کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5022260 | 1469484 | 2017 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Semi-interpenetrating network composites of poly(lactic acid) with cis-9-octadecenylamine modified cellulose-nanofibers from Areca catechu husk
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Semi-interpenetrating network composites of poly(lactic acid) with cis-9-octadecenylamine modified cellulose-nanofibers from Areca catechu husk Semi-interpenetrating network composites of poly(lactic acid) with cis-9-octadecenylamine modified cellulose-nanofibers from Areca catechu husk](/preview/png/5022260.png)
چکیده انگلیسی
Poly(lactic acid)/cellulose-nano fiber (PLA/CNF) composites were prepared with CNF synthesized from the areca husk fibers (AHF) by TEMPO-mediated oxidation for the first time and the properties were evaluated. MCNF synthesized by the controlled amidation of CNF with cis-9-octadecenylamine (OA) resulted in PLA/MCNF composites with higher mechanical properties and tunable elongation compared to PLA/CNF. It was shown that the tensile properties can be further improved with induced cross-linking at melt processing conditions using dibenzoyl peroxide (DBP) in PLA/MCNF/DBP. The increased elongation observed with higher MCNF content showed the possibility for control on brittleness in these transparent nano composites. The higher modulus and thermal stability observed in the cross-linked composites with 2% MCNF and 2% DBP attributed to the formation of semi-interpenetrating network (SIPN) by in situ cross-linking evidenced by SEM and TEM observations. DSC analysis of cured composites showed lowering of Tg with MCNF incorporation which may be attributed to the increased segmental mobility of PLA due to reduced interface by cross-linking. DMA analysis showed the better compatibility of the MCNF with the PLA matrix in SIPN attributed to the long alkyl chain modification. The increase in modulus with a negative shift in the tan δ peak position further supported the cross-links in SIPN. These SIPN showed transparency to visible light and a very low water absorption of 1.5% compared to 7% for virgin PLA. These green composites with tunable flexibility, modulus and better thermal stability showed prospects for applications as transparent eco-friendly food packaging material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 141, 22 March 2017, Pages 65-73
Journal: Composites Science and Technology - Volume 141, 22 March 2017, Pages 65-73
نویسندگان
Sumesh Soman, Asha Susan Chacko, Vadakkethonippurathu Sivankuttynair Prasad,