摘要
在溶解性良好的阴离子瓜尔胶(MAG)基础上引入自制的水溶性阳离子疏水长链单体,赋予其动态物理交联及静电桥作用,形成一种两性疏水瓜尔胶(MAG-N22)。室内实验表明,MAG-N22有更高的黏度,0.6%达到114 mPa·s,明显高于瓜尔胶原粉(GG)与MAG。MAG-N22微观网络结构测试显示0.4%,0.5%水溶液的网状结构明显更为致密。MAG-N22在312℃时达到分解温度,相比GG(285℃)以及MAG(308℃)有所提高。MAG-N22在高剪切以及不同盐浓度条件下的的黏度一直优于MAG与GG。结果表明,向瓜尔胶中引入水溶性疏水基团可有效提高GG的增黏性,耐温性以及耐盐性。
An amphoteric hydrophobic guar gum MAG-N22 was prepared by introducing an self-made water-soluble hydrophobic long-chain monomer on the basis of anionic guar gum(MAG)guar gum.The laboratory tests showed 0.6%of NAG-N22 reaching 114 mPa·s,which was significantly higher than guar collagen powder(GG)and MAG.The microscopic network structure test showed that the network structure of w(MAG-N22)=0.4%0.5%aqueous solutions was significantly denser.The decomposition temperature MAG-N22 was 312℃,which is higher than GG(285℃)and MAG(308℃).In addition,the viscosity of MAG-N22 under high shear and different salt concentrations has always been better than that of MAG and GG.The results showed that the introduction of hydrophobic groups into macromolecular water-soluble polymers by covalent bonds or other means can effectively improve the rheological properties of their aqueous solutions.
作者
张照阳
管彬
毛金成
周瀚
何启平
鲍晋
孟照海
Zhang Zhaoyang;Guan Bin;Mao Jincheng;Zhou Han;He Qiping;Bao Jin;Meng Zhaohai(CNPC Chuangqing Dring Engineering Company Limited,Chengdu 610500,Sichuan,China;State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation(Southwest Petroleum University),Chengdu 610500,Sichuan,China)
出处
《精细石油化工》
CAS
2021年第1期17-22,共6页
Speciality Petrochemicals
基金
国家科技重大专项(2016ZX05040003)。
关键词
可溶性疏水长链
瓜尔胶
抗剪切性
耐盐性
cation
soluble hydrophobic long chain
guar gum
salt tolerance
molecular simulation
