Surface modification of cellulose nanocrystals by grafting with poly(lactic acid)

被引：41
作者：
Peltzer, Mercedes [1 ]
Pei, Aihua [2 ,3 ]
Zhou, Qi [2 ,3 ]
Berglund, Lars [3 ]
Jimenez, Alfonso [1 ]
机构：
[1] Univ Alicante, Analyt Chem Nutr & Food Sci Dept, E-03080 Alicante, Spain
[2] Royal Inst Technol, AlbaNova Univ Ctr, Sch Biotechnol, SE-10691 Stockholm, Sweden
[3] Royal Inst Tecnol, Dept Fiber & Polymer Technol, SE-10044 Stockholm, Sweden
来源：
POLYMER INTERNATIONAL | 2014年 / 63卷 / 06期
关键词：
grafting-from; surface modification; cellulose nanocrystals; ring-opening polymerization; L-lactide; NANOWHISKERS; WHISKERS; POLY(EPSILON-CAPROLACTONE); NANOCOMPOSITES; POLYLACTIDE; DISPERSION; EXTRUSION;
D O I：
10.1002/pi.4610
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The use of biopolymers obtained from renewable resources is currently growing and they have found unique applications as matrices and/or nanofillers in 'green' nanocomposites. Grafting of polymer chains to the surface of cellulose nanofillers was also studied to promote the dispersion of cellulose nanocrystals in hydrophobic polymer matrices. The aim of this study was to modify the surface of cellulose nanocrystals by grafting from L-lactide by ring-opening polymerization in order to improve the compatibility of nanocrystals and hydrophobic polymer matrices. The effectiveness of the grafting was evidenced by the long-term stability of a suspension of poly(lactic acid)-grafted cellulose nanocrystals in chloroform, by the presence of the carbonyl peak in modified samples determined by Fourier transform infrared spectroscopy and by the modification in C1s contributions observed by X-ray photoelectron spectroscopy. No modification in nanocrystal shape was observed in birefringence studies and transmission electron microscopy. (c) 2013 Society of Chemical Industry
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页码：1056 / 1062
页数：7
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