PBS/淀粉复合材料性能研究

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英文篇名：Study on Properties of PBS/Starch Composites 作者：刘俊红 ; 黄勇 ; 刘峻川 ; 何凤霞 ; 聂欣 英文作者：Liu Junhong;Huang Yong;Liu Junchuan;He Fengxia;Nie Xin;Sichuan Vocational College of Chemical Technology;Sichuan Institute of Technology; 关键词：聚丁二酸丁二醇酯 ; 淀粉 ; 正交试验 ; 复合材料 ; 力学性能 英文关键词：PBS;;Starch;;Orthogonal experiment;;Composite;;Mechanical properties 中文刊名：SLKJ 英文刊名：Plastics Science and Technology 机构：四川化工职业技术学院;四川理工学院; 出版日期：2019-04-03 出版单位：塑料科技 年：2019 期：v.47;No.324 基金：泸州市科技计划项目(2016-S-63(1/3)) 语种：中文; 页：SLKJ201904025 页数：6 CN：04 ISSN：21-1145/TQ 分类号：53-58

摘要

以表面活性剂硬脂酸聚乙二醇酯(PEOST)、甘油、尿素和乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯无规三元共聚物(AX89)为因素,设计L9(34)正交试验表,进行了聚丁二酸丁二醇酯(PBS)/淀粉复合材料的优化实验。此外,利用红外光谱对该复合材料进行了表征,并以最优配方制备了改性淀粉,研究了改性淀粉用量对PBS/淀粉复合材料性能的影响。结果表明:甘油和尿素是影响PBS/淀粉复合材料拉伸强度和撕裂强度的主要因素,而对断裂伸长率影响最大的则是PEOST。对复合材料中PBS结晶温度影响最大的是甘油,其次为PEOST、AX89,最后是尿素。以所确定的最优水平组合制备PBS/淀粉复合材料,其拉伸强度、断裂伸长率、撕裂强度可分别达到11.32 MPa、162.32%和89.67 N/m。随着改性淀粉用量的增加,PBS/淀粉复合材料的拉伸强度、断裂伸长率和撕裂强度均呈下降趋势,其中当淀粉添加量为40%时,降幅分别达到69.16%、71.26%和65.12%。此外红外光谱显示,与纯PBS相比,PBS/淀粉复合材料在3 365和1 617 cm~(-1)处还出现了羟基和羰基的特征峰。
        Poly(butylene succinate)(PBS)/starch composites were prepared in this paper. The L9(34) orthogonal test table was designed to optimize the experiment, with polyglycol stearate(PEOST), glycerol, urea and ethylene-methyl acrylate-glycidyl methacrylate copolymer(AX89) as the factors. Moreover, the PBS/starch composites were characterized by FTIR. The modified starch was prepared with the optimum formula, and the effects of the modified starch dosage on the properties of PBS/starch composites were also discussed. The results show that glycerol and urea are the main factors which affecting the tensile strength and tear strength of PBS/starch composites, while PEOST has the greatest influence on the elongation at break, then glycerin and AX89. Glycerol is the main factor affecting the crystallization temperature of PBS in the composites, then the PEOST, AX89, and the last is urea. Tensile strength of the PBS/starch composites prepared with the optimum formula is 11.32 MPa, the elongation at break is 162.32%, and the tear strength is 89.67 N/m. With the increase of modified starch amount, the tensile strength, elongation at break and tear strength decrease, and the descent degrees reach to 69.16%, 71.26% and 65.12% respectively, when the amount of starch is 40%. FTIR spectra shows that the characteristic peaks of hydroxyl and carbonyl groups at 3 365 cm-1 and 1 617 cm~(-1) emerge in PBS/starch composites but not in pure PBS.

引文

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