中国造纸2011，Vol.30Issue(11)：26-30,5.
聚碳酸亚丙酯/木质素熔融共混改性研究
Modification of Poly(Propylene Carbonate)by Blending Lignin
摘要
Abstract
Biodegradable blends of poly ( propylene carbonate) ( PPC) were prepared by melt blending with lignin, the effect of type of lignin and mixing ratio of lignin on the miscibility, glass transition temperature(Tg), weight loss temperature, mechanical properties and degradation of PPC/Alkali lignin( AL) as well as the mechanism of PCC modification with lignin were investigated. The results showed that the Tt of PPC/AL blend is 30.9℃ that increases by 8.9T compared with PPC and T_5% , t-50% and Tmax of PCC/AL are essentially unchanged; the tensile strength increases from 4. 30 Mpa of PPC to 13.44 Mpa of PPC/AL blends and the elongation at break decreases from 830% of PPC to 115% of PPC/AL when AL percentage is 40% , its degradation rate in the 12th day can reach 44% ; the T%, T_5% , T-50% and Tmax of PPC/Calcium Iignosulfonate (CLS) blend are respectively up to 32.1, 196.5, 293.8 and 292.5℃ , which increase by 10.1, 3.0, 56. 7 and 60.5℃ correspondingly. When the CLS percentage is 20% , the tensile strength reaches to 10.06 Mpa that is increased by 134% compare to PCC and the elongation at break is 397% that is less than PPC by 52% , and the degradation rate in the 12th clay is up to 38%. Es-terification and hydrogen bond are the mainly reaction between lignin and PPC.关键词
木质素/聚碳酸亚丙酯/降解/改性/熔融共混Key words
lignin / poly ( propylene carbonate) / degradation/ modification/ melt blending分类
化学化工引用本文复制引用
潘莉莎,熊亚林,庞素娟,代火星,徐鼐,林强..聚碳酸亚丙酯/木质素熔融共混改性研究[J].中国造纸,2011,30(11):26-30,5.基金项目
海南大学青年基金(qnjj1167)项目 （qnjj1167）
海南省重点科技项目(080302) （080302）
海南省重点科技项目(090502). （090502）
