Na-GMMT含量对热塑性淀粉性能的影响  

Effect of Na-GMMT Content on Performance of Thermoplastic Starch

作　　者：姜林旭 王晓广[1,2] 夏发明 方可 苏小雅 JIANG Lin-xu;WANG Xiao-guang;XIA Fa-ming;FANG Ke;SU Xiao-ya(Wuhan Textile University,Wuhan 430200,China;Hubei Dingxin Environmental Protection Biomass Materials Co.,Ltd.,Huangshi 435200,China;Shandong Runquan Biotechnology Co.,Ltd.,Zaozhuang 277000,China)

机构地区：[1]武汉纺织大学,湖北武汉430200 [2]湖北顶新环保生物质材料有限公司,湖北黄石435200 [3]山东润泉生物科技有限公司,山东枣庄277000

出　　处：《塑料科技》2023年第12期61-64,共4页Plastics Science and Technology

摘　　要：钠基蒙脱土与丙三醇在恒温油浴的条件下制备Na-GMMT悬浮液,按一定的比例与丙三醇、淀粉在双螺杆挤出机的高温热剪切下制备TPS/Na-GMMT复合材料。研究Na-GMMT的填充量对TPS材料各项性能的影响。结果表明:Na-GMMT的添加提升了TPS/Na-GMMT复合材料的拉伸强度。Na-GMMT的添加未改变TPS的结晶情况。Na-GMMT的添加能够改善TPS材料的热稳定性,Na-GMMT添加量为10%,TPS/Na-GMMT复合材料的初始热分解温度与热分解最大速率温度由TPS的286℃、312℃分别提升至317℃、322℃。玉米淀粉中的支链淀粉进入蒙脱土的片层结构中,形成更加紧密的结构。Na-GMMT的添加能够提升TPS材料的亲水性,当Na-GMMT添加量达到10%时,复合材料由亲水性变为疏水性。Na-GMMT suspension was prepared with sodium-based montmorillonite and glycerol under the condition of a constant-temperature oil bath,and TPS/Na-GMMT composites were fabricated by combining Na-GMMT in specific proportions with glycerol and starch using a twin-screw extruder under high-temperature thermal shear.The effects of the filling amount of Na-GMMT on various properties of TPS materials were studied.The results show that the addition of Na-GMMT enhances the tensile strength of TPS/Na-GMMT composites.The addition of Na-GMMT does not alter the crystalline structure of TPS.The addition of Na-GMMT improves the thermal stability of TPS materials;with a Na-GMMT content of 10%,the initial thermal decomposition temperature and the temperature of the maximum decomposition rate of TPS/Na-GMMT composites increase from 286℃and 312℃for TPS to 317℃and 322℃respectively.Branch starch from corn starch enters the lamellar structure of montmorillonite,forming a more compact structure.The addition of Na-GMMT enhances the hydrophilicity of TPS materials.When the addition amount of Na-GMMT reaches 10%,the composite changes from hydrophilic to hydrophobic.

关 键 词：钠基蒙脱土 热塑性淀粉 力学性能 热稳定性 亲疏水性 

分 类 号：TB332[一般工业技术—材料科学与工程]