基于玉米棒的环境友好材料的研究(Ⅱ)以玉米棒为原料的聚氨酯的合成及生物降解性  

STUDIES ON THE BIODEGRADABLE MATERIALS BASED ON CORN-COB (Ⅱ) PREPARATION AND BIODEGRADATION OF PU FOAM FROM CORN-COB

作　　者：戈进杰[1] 张志楠[1] 徐江涛[1] 

机构地区：[1]复旦大学高分子科学系,聚合物分子工程教育部重点实验室,上海200433

出　　处：《高分子材料科学与工程》2003年第4期177-180,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金重点资助项目 ( 5 993 3 0 70 ;3 9970 5 98)

摘　　要：以玉米棒 (CB)在聚乙二醇 4 0 0 (PEG4 0 0 )与一缩二乙二醇 (DEG)混合液化试剂中的液化反应所得到的液化多元醇为原料 ,合成了生物可降解半硬质聚氨酯发泡体。其密度为 37kg/ m3～ 68kg/ m3,压缩强度为 80 k Pa～ 2 4 5 k Pa,弹性模量为 0 .73MPa～ 5 .3MPa,显示出良好的性能。在土壤微生物作用下 ,其氢键化程度与内聚力指数逐渐下降 ,质量损失 ,结构破损 。Liquefied corn cob (CB)-based polyol was obtained by the liquefaction of CB in the presence of a poly(ethylene glycol)(PEG400)/diethylene glycol (DEG) mixed solvent. CB-based polyurethane foams(CBPU) were successfully prepared from the liquefied CB. The CBPU foams show good propeties ,which had density of 37 kg/m 3～68 kg/m 3 , compressive strength of 80 kPa～245 kPa and elastic modulus of 0.73 MPa～ 5.3 MPa. CBPU can be degraded by soil microorganisms with destroy of structure, weaken of hydrogen bonding of the PU hard segment and mass loss.

关 键 词：玉米棒 环境友好材料 原料 聚氨酯 合成 生物降解性 

分 类 号：TQ914.1[化学工程] TQ323.8