检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:王学川[1] 袁绪政[1] 强涛涛[1] 陈星[1]
机构地区:[1]陕西科技大学资源与环境学院,陕西西安710021
出 处:《精细化工》2009年第1期68-72,共5页Fine Chemicals
基 金:国家自然科学基金项目(20676075);教育部博士点基金项目(20060708002)~~
摘 要:以二乙醇胺(DEA)和丙烯酸甲酯(MA)为原料,通过Michael加成反应制得AB2型单体;由“一步法”使单体与核(三羟甲基丙烷,TMP),在对甲苯磺酸(P—TSA)催化下,通过酯交换反应制得一种端羟基超支化聚(胺-酯)(HPAE)。经单因素实验筛选出了HPAE的最优合成条件:反应温度120℃、ω(P-TSA)=2%(相对于单体与核的总质量)、反应时间4~5h。用IR、GPC等手段对聚合物的分子结构进行了表征,并将HPAE应用于绵羊皮蓝湿革的复鞣。结果表明,HPAE—Ⅰ(第一代端羟基超支化聚合物)对皮样漂白作用明显,白度值增幅为19.8%;HPAE-Ⅲ(第三代端羟基超支化聚合物)可以显著提高铬鞣革撕裂强度,增幅为23.3%,抗张强度增幅为11.3%。The divergent synthesis of a series of hyperbranched poly (amine-ester) based on trimethylolpropane( as a core molecule) and methyl 3-( N, N-diethylolamino)propionate (as a AB2 monomer) synthesized via Michael addition of methyl acrylate and diethanolamine, proceeded in onestep procedure in the melt using P - TSA as catalyst. The appropriate reaction conditions were optimized :catalyst dosage 2% (based on total mass of monomer and core), reaction time 4 -5 h and temperature 120 ℃. The polymer was characterized by IR and GPC. It was applied to retan wet blue leather of sheepskin. The results indicate that: HPAE-Ⅰ ( the first generation of polymer) has good bleaching effect on the sample,increasing the white degree by 19. 8% ;HPAE-Ⅲ (the third generation of polymer) can improve the tearing resistance of chrome tanned leather obviously (increased by 23.3% ),and had some help to tensile strength(increased by 11.3% ) at the same time.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.188