以稻秸原料制备的纳米纤维素(NCC)为增强相,聚羟基丁酸戊酸酯(PHBV)为基体材料,聚乙二醇为界面相容剂,采用溶剂浇筑法制备了稻秸NCC/ PHBV复合材料。利用FTIR、XPS和DSC探讨了聚乙二醇的添加量(质量分数5%、10%、15%、20%、30%)对纳米复合材料界面结合性能和结晶性能的影响。结果表明,聚乙二醇可以与稻秸NCC、PHBV之间形成较强的氢键、C—O、O—C—O和C=O,改善两者之间的界面相容性。聚乙二醇的加入可以降低纳米复合材料的结晶温度和结晶度,当聚乙二醇的添加量达到30%时,纳米复合材料的结晶温度降低了20.4 ℃,结晶度降低了53%。
Abstract
Nanocomposites of poly(hydroxybutyrate-co-hydroxyvalerate)(PHBV)and rice straw-derived nanocrystalline cellulose(NCC)modified by polyethylene glycol(PEG, 5%, 10%, 15%, 20%, 30%, weight percentage)were prepared with solvent casting method, and the interfacial bonding and crystalline properties of nanocomposites were investigated by fourier infrared spectroscopy(FTIR), X-ray photoelectron spectroscopy(XPS), and differential scanning calorimeters(DSC). The results showed that the interfacial compatibility between NCC and PHBV improved due to the formation of hydroxyl, C—O, O—C—O and C=O. With incorporation of PEG, the crystallization temperature and crystallinity of nanocomposites were both decreased. When PEG was 30%, the crystallization temperature decreased 20.4 ℃, and crystallinity of nanocomposites was reduced by 53%.
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基金
收稿日期:2013-06-04 修回日期:2014-01-14
基金项目:教育部科学技术研究重点项目(212064); 全国优秀博士学位论文作者专项资金资助项目(201173)
第一作者:潘明珠,博士,副教授。E-mail: mzpan@njfu.edu.cn。
引文格式:潘明珠,周定国,周晓燕,等. 聚乙二醇对稻秸纤维/PHBV复合材料性能的影响[J]. 南京林业大学学报:自然科学版,2014,38(4):123-126.
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