笼型倍半硅氧烷聚合物/骨胶复合地膜的制备及性能  

Preparation and Properties of Polyhedral Oligosasiloxane Polymer/Bone Gelatin Composite Mulch

作　　者：吕斌 芦香瑞 高党鸽 吴昊媛 Bin Lü;Xiangrui Lu;Dangge Gao;HaoyuanWu(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,China;Xi'an Key Laboratory of Green Chemicals and Functional Materials,Xi'an 710021,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]西安市绿色化学品与功能材料重点实验室,陕西西安710021 [3]陕西科技大学轻化工程国家级实验教学示范中心,陕西西安710021

出　　处：《高分子材料科学与工程》2023年第5期1-9,16,共10页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21878182);陕西省“高层次人才特殊支持计划”青年拔尖人才项目;陕西省创新能力支撑计划(2021TD-16);陕西省重点研发计划(2023-YBGY-483)。

摘　　要：首先以八乙烯基笼型倍半硅氧烷(POSS-Vi)和乙烯基类单体为原料,采用自由基聚合法制备含有环氧基、酯基和羧基的多支化POSS聚合物;红外分析(FT-IR)、X射线衍射分析(XRD)和透射电镜(TEM)结果表明,POSS在聚合物中保持完整的笼型结构,直径在90 nm左右。然后采用POSS聚合物改性骨胶,制备POSS聚合物/骨胶复合薄膜,通过FT-IR、XRD和扫描电镜(SEM)对其结构形貌进行表征,同时考察了其作为地膜的相关性能。结果表明,POSS聚合物的环氧基与骨胶氨基发生了开环反应,改变了骨胶的非晶态结构。与骨胶膜相比,当POSS聚合物质量分数为25%时,复合薄膜的断裂伸长率提升了83.4%,在可见光区域的透光率平均降低了19.5%,水蒸气透过率下降了17.3%。其对土壤不仅能够起到保墒保温作用,而且在自然土壤中埋藏60 d即可降解82.98%。Firstly,the branched polyhedral oligosasiloxane(POSS)polymer containing epoxy groups,ester groups and carboxyl groups was prepared by free radical polymerization of octavinylpolyhedral oligomericsilsesquioxane(POSS-Vi)and vinyl monomer.The results of FT-IR,XRD and TEM show that the cage structure of POSS in the polymer remains intact with a diameter of about 90 nm.Furthermore,the bone gelatin modified with POSS polymer was used to prepare POSS polymer/bone gelatin composite films,and the structure and morphologies were characterized.The results show that the epoxy groups of the POSS polymer undergo a ring-opening reaction with the amino groups of the bone gelatin,changing the amorphous structure of the bone gelatin.Compared with the bone gelatin film,when the mass fraction of POSS polymer is 25%,the elongation at break of the composite film is increased by 83.4%,the transmittance in the visible light region is decreased by 19.5%on average,and the water vapor transmittance is decreased by 17.3%.It has the ability of heat preservation and moisture preservation required by plastic film mulching and can degrade 82.98%after 60 d of burial in soil.

关 键 词：笼型倍半硅氧烷聚合物 骨胶 力学性能 光学性能 水蒸气透过性能 可降解地膜 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]