大豆油基硫醚多元醇/乙基纤维素超分子复合膜的制备与性能研究  

Preparation and Properties of Soybean Oil-based Thioether Polyol/Ethylcellulose Supramolecular Composite Films

作　　者：闫如玉 聂圆 李梅[1] 林明涛[1] 姚娜 李守海[1] Yan Ruyu;Nie Yuan;Li Mei;Lin Mingtao;Yao Na;Li Shouhai(Institute of Chemical Industry of Forest Products,CAF/Jiangsu Provincial Key Lab.of Biomass Energy and Material/Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration/National Engineering Research Center of Low-carbon Processing and Utilization of Forest Biomass/Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Jiangsu 210042,China;College of Materials Science and Technology,Beijing Forestry University,Beijing 100091,China)

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏省林业资源高效加工利用协同创新中心,江苏南京210042 [2]北京林业大学材料科学与技术学院,北京100091

出　　处：《西南林业大学学报（自然科学）》2024年第6期158-167,共10页Journal of Southwest Forestry University：Natural Sciences

基　　金：国家自然科学基金面上项目(31971598)资助。

摘　　要：为解决乙基纤维素(EC)成膜的质脆性,以天然大豆油及其衍生物环氧脂肪酸甲酯、环氧大豆油为原料制备了3种硫醚多元醇(EATP、ESTP、EHTP),分别将其以30∶70的经验质量比与EC进行复合制备了3种增韧改性EC基复合膜,用红外光谱、核磁共振氢谱、扫描电镜、热重分析、动态机械热分析等表征其性能。结果表明:3种大豆油基硫醚多元醇与EC具有良好的相容性,复合膜断裂面孔洞数量相对较少,亲水性和柔韧性显著增强,玻璃化转变温度显著降低。与EC膜相比,EATP和EHTP改性复合膜的热稳定性略有下降,ESTP改性复合膜的热稳定性优于EC膜。In order to solve the brittleness of conventional ethyl cellulose(EC)film,and improve its flexibility,3 different sulfide polyols(EATP,ESTP,EHTP)were synthesized from soybean oil and its derivativesas,including epoxy fatty acid methyl ester,epoxy soybean oil.Next,these 3 polyols were physically blended with ethylcellulose(EC)at an experience weight ratio of 30∶70 to create 3 toughening modification composite ECbased films,and the properties were characterized by infrared spectroscopy,proton nuclear magnetic resonance spectroscopy,scanning electron microscopy,thermogravimetric analysis,and dynamic mechanical thermal analysis.The results showed that the prepared 3 different soybean oil-based thioether polyols possessed good compatibility with EC,and there existed few holes on the fracture surface of prepared toughening modification EC composite films.Compared with EC film,the hydrophilicity and flexibility of the composite film were significantly en-hanced,and the glass transition temperatures were also significantly reduced.Compared with EC film,the thermal stability of EATP and EHTP modified composite systems were slightly decreased,but ESTP modified composite system had more superior thermal stability than EC film.

关 键 词：大豆油 乙基纤维素 增韧改性 超分子结构 复合膜 

分 类 号：O641.3[理学—物理化学]