摘要
将中间含不同长度烷基的疏水性二醇引入到聚氨酯预聚体链段中,得到一系列链段中带悬挂基团的梳状聚氨酯缔合型增稠剂,并用FTIR和GPC对其结构进行了表征。着重研究了疏水性二醇与总羟基(疏水性二醇与聚乙二醇)的摩尔比以及中间疏水基的大小对增稠剂增稠效果的影响。结果表明,疏水基团是决定增稠剂增稠效果的决定性因素,随着疏水性二醇所占比例的增大,增稠效果显著加强;同样中间烷基链段的碳原子数的增多,缔合作用加强,增稠效果变好。
A series of comb-polyurethane associative thickeners modified by pendant aliphatic groups were obtained by hydrophobic diol which was introduced into the chain of pre-polyurethane,then characterized by FTIR and GPC.The effects of hydrophobic diol/OH（including hydrophobic diol and PEG） and the size of mid-hydrophobic alkyl group were studied.The results showed that： Hydrophobic groups were the most important effect on thickener efficiency,as the molar ratio of hydrophobic diol/OH increasing,the thickener efficiency was notable enhanced.With the size of mid-hydrophobic alkyl group adding,association effect was reinforced,and then thickener efficiency was enhanced.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第A01期168-171,175,共5页
Journal of Functional Materials
基金
广东省自然科学基金资助项目(8251065004000001)
关键词
梳状聚氨酯缔合型增稠剂
缔合作用
疏水基团
comb-polyurethane associative thickener
association effect
hydrophobic groups
