Structural and thermal characterization of sugarcane bagasse phthalates prepared with ultrasound irradiation

被引：22
|
作者：
Liu, CF [1 ]
Sun, RC [1 ]
Ye, J [1 ]
机构：
[1] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou, Peoples R China
来源：
POLYMER DEGRADATION AND STABILITY | 2006年 / 91卷 / 02期
基金：
中国国家自然科学基金;
关键词：
sugarcane bagasse; phthalic anhydride; chemical modification; phthalation; ultrasound;
D O I：
10.1016/j.polymdegradstab.2005.05.005
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Chemical modification of sugarcane bagasse was achieved by esterification with phthalic anhydride in pyridine after ultrasound irradiation, The parameters including ultrasonic irradiation time 0-40 min, phthalic anhydride dosage 2.5-7.5 g, reaction time 30-150 min, and reaction temperature 80-115 degrees C were optimised and the extent of phthalation was measured by weight percent gain. It was found that degradation of the cell wall polymers occurred at higher temperature ( (>90 C) under the experimental conditions used. FT-IR and CP/MAS C-13 NMR spectroscopy studies also clearly produced evidence for phthalation reaction. The phthalated bagasse preparations showed decreased thermal stability after chemical modification. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：280 / 288
页数：9
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