Fabrication of hierarchical porous polymer particles via blending strategy of water and polymer mixture

被引：3

作者：

Wang, Bin ^{[1
]}

Li, Tian ^{[1
]}

Guo, Wenling ^{[1
]}

Cao, Peng ^{[1
]}

Wang, Rongmin ^{[1
]}

Song, Pengfei ^{[1
]}

He, Yufeng ^{[1
]}

Li, Yonggang ^{[1
]}

机构：

[1] Northwest Normal Univ, Key Lab Ecofunct Polymer Mat MOE, Inst Polymer, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China

来源：

POLYMER INTERNATIONAL | 2022年 / 71卷 / 07期

基金：

中国国家自然科学基金;

关键词：

porous microspheres; solvent regulation; hierarchical structures; polymer synthesis; nanotechnology; ACTIVE-CENTERS; NANOPARTICLES;

D O I：

10.1002/pi.6363

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Hierarchical porous polymer particles (HPPPs) from the assembly of polymer chains have attracted increasing interest because of their prospective applications in drug delivery and catalysis. This work utilized a blending strategy of polymer mixture in mixed solvents to fabricate HPPPs with adjustable pore structures. Firstly, using methacrylic acid (MAA) and methyl methacrylate (MMA) with a precise ratio, a copolymer solution of P(MMA-MAA) was prepared in a mixed solvent of ethanol and water. Then, styrene (St) was added stepwise along with polymerization for achieving a translucent polymer mixture. Further, a quantitative amount of the polymer mixture and six-fold volume of water were rapidly mixed with vortex oscillation. The HPPPs were formulated eventually by the assembly of hydrophilic P(MMA-MAA) copolymers and hydrophobic PSt homopolymers, as well as micelles comprised of P(MMA-MAA) copolymer and low-polarity solvent. The size and number of nanopores were effectively regulated by the solvent polarity, polymerization temperature and monomer ratios. Moreover, the resultant HPPPs exhibited a hierarchical porous structure, having broad application in biomedical and environmental sciences. (c) 2022 Society of Industrial Chemistry.

引用

页码：921 / 930

页数：10