以二醇甘油单油酸酯为扩链剂、聚乙二醇为亲水链段、异佛尔酮二异氰酸酯为连接点合成了疏水侧链型水性聚氨酯缔合型增稠剂(SHEUR)。研究了聚乙二醇的相对分子质量以及二醇甘油单油酸酯的含量对SHEUR性能的影响。对制备的SHEUR进行了红...以二醇甘油单油酸酯为扩链剂、聚乙二醇为亲水链段、异佛尔酮二异氰酸酯为连接点合成了疏水侧链型水性聚氨酯缔合型增稠剂(SHEUR)。研究了聚乙二醇的相对分子质量以及二醇甘油单油酸酯的含量对SHEUR性能的影响。对制备的SHEUR进行了红外表征,并进行了表面张力、临界胶束浓度(CMC)以及黏度性能测试。结果表明:SHEUR能够降低溶液表面张力至50 m N/m,在溶液中能够形成胶束;CMC与分子结构有关,降低亲水链段或增加疏水侧链能使CMC值降低,反之,CMC值升高;适当地增加亲水链段长度以及疏水侧链部分的含量,有助于提高SHEUR的自增稠效果。展开更多
Numerous peptides derived from naturally occurring proteins or de novo designed have been found to self-assemble into various nanostructures.These well-defined nanostructures have shown great potential for a variety o...Numerous peptides derived from naturally occurring proteins or de novo designed have been found to self-assemble into various nanostructures.These well-defined nanostructures have shown great potential for a variety of biomedical and biotechnological applications.In particular,surfactant-like peptides(SLPs)have distinctive advantages in their length,aggregating ability,and water solubility.In this article,we report recent advances in the mechanistic understanding of the self-assembly principles of SLPs and in their applications,most of which have been made in our laboratory.Hydrogen bonding between peptide backbones,hydrophobic interaction between hydrophobic side chains,and electrostatic repulsion between charged head groups all have roles in mediating the self-assembly of SLPs;the final self-assembled nanostructures are therefore dependent on their interplay.SLPs have shown diverse applications ranging from membrane protein stabilization and antimicrobial/anticancer agents to nanofabrication and biomineralization.Future advances in the self-assembly of SLPs will hinge on their large-scale production,the design of new functional SLPs with targeted properties,and the exploitation of new or improved applications.展开更多
文摘以二醇甘油单油酸酯为扩链剂、聚乙二醇为亲水链段、异佛尔酮二异氰酸酯为连接点合成了疏水侧链型水性聚氨酯缔合型增稠剂(SHEUR)。研究了聚乙二醇的相对分子质量以及二醇甘油单油酸酯的含量对SHEUR性能的影响。对制备的SHEUR进行了红外表征,并进行了表面张力、临界胶束浓度(CMC)以及黏度性能测试。结果表明:SHEUR能够降低溶液表面张力至50 m N/m,在溶液中能够形成胶束;CMC与分子结构有关,降低亲水链段或增加疏水侧链能使CMC值降低,反之,CMC值升高;适当地增加亲水链段长度以及疏水侧链部分的含量,有助于提高SHEUR的自增稠效果。
基金supported by the National Natural Science Foundation of China(21373270,21033005)the Natural Science Foundation of Shandong Province(JQ201105).the support of the Program for New Century Excellent Talents in University(NCET-11-0735)
文摘Numerous peptides derived from naturally occurring proteins or de novo designed have been found to self-assemble into various nanostructures.These well-defined nanostructures have shown great potential for a variety of biomedical and biotechnological applications.In particular,surfactant-like peptides(SLPs)have distinctive advantages in their length,aggregating ability,and water solubility.In this article,we report recent advances in the mechanistic understanding of the self-assembly principles of SLPs and in their applications,most of which have been made in our laboratory.Hydrogen bonding between peptide backbones,hydrophobic interaction between hydrophobic side chains,and electrostatic repulsion between charged head groups all have roles in mediating the self-assembly of SLPs;the final self-assembled nanostructures are therefore dependent on their interplay.SLPs have shown diverse applications ranging from membrane protein stabilization and antimicrobial/anticancer agents to nanofabrication and biomineralization.Future advances in the self-assembly of SLPs will hinge on their large-scale production,the design of new functional SLPs with targeted properties,and the exploitation of new or improved applications.
