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Preparation of Uniform-Sized and Dual Stimuli-Responsive Microspheres of Poly(N-Isopropylacrylamide)/Poly(Acrylic acid) with Semi-IPN Structure by One-Step Method
Lai, En-Ping1,2; Wang, Yu-Xia2; Wei, Yi2; Li, Guang1
2016-03-01
发表期刊POLYMERS
ISSN2073-4360
卷号8期号:3页码:1
摘要A novel strategy was developed to synthesize uniform semi-interpenetrating polymer network (semi-IPN) microspheres by premix membrane emulsification combined with one-step polymerization. Synthesized poly(acrylic acid) (PAAc) polymer chains were added prior to the inner water phase, which contained N-isopropylacrylamide (NIPAM) monomer, N,N '-methylene bisacrylamide (MBA) cross-linker, and ammonium persulfate (APS) initiator. The mixtures were pressed through a microporous membrane to form a uniform water-in-oil emulsion. By crosslinking the NIPAM in a PAAc-containing solution, microspheres with temperature- and pH-responsive properties were fabricated. The semi-IPN structure and morphology of the microspheres were confirmed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The average diameter of the obtained microspheres was approximately 6.5 mu m, with Span values of less than 1. Stimuli-responsive behaviors of the microspheres were studied by the cloud-point method. The results demonstrated that semi-IPN microspheres could respond independently to both pH and temperature changes. After storing in a PBS solution (pH 7.0) at 4 degrees C for 6 months, the semi-IPN microspheres remained stable without a change in morphology or particle size. This study demonstrated a promising method for controlling the synthesis of semi-IPN structure microspheres with a uniform size and multiple functionalities.
关键词Uniform Microspheres Premix Membrane Emulsification Semi-interpenetrating Polymer Network (Semi-ipn) Poly(N-isopropylacrylamide) (Pnipam) Stimuli-responsive
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.3390/polym8030090
收录类别SCI
语种英语
关键词[WOS]INTERPENETRATING POLYMER NETWORKS ; MICROGEL PARTICLES ; ACRYLIC-ACID ; HYDROGELS ; TEMPERATURE ; RELEASE ; MICROCAPSULES ; ACRYLAMIDE ; BEHAVIOR ; PH
WOS研究方向Polymer Science
WOS类目Polymer Science
项目资助者Beijing Municipal Science and Technology Commission(Z141100000214007) ; National Natural Science Foundation of China(51173187 ; 21336010)
WOS记录号WOS:000373711700006
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21003
专题生化工程国家重点实验室
作者单位1.Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
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Lai, En-Ping,Wang, Yu-Xia,Wei, Yi,et al. Preparation of Uniform-Sized and Dual Stimuli-Responsive Microspheres of Poly(N-Isopropylacrylamide)/Poly(Acrylic acid) with Semi-IPN Structure by One-Step Method[J]. POLYMERS,2016,8(3):1.
APA Lai, En-Ping,Wang, Yu-Xia,Wei, Yi,&Li, Guang.(2016).Preparation of Uniform-Sized and Dual Stimuli-Responsive Microspheres of Poly(N-Isopropylacrylamide)/Poly(Acrylic acid) with Semi-IPN Structure by One-Step Method.POLYMERS,8(3),1.
MLA Lai, En-Ping,et al."Preparation of Uniform-Sized and Dual Stimuli-Responsive Microspheres of Poly(N-Isopropylacrylamide)/Poly(Acrylic acid) with Semi-IPN Structure by One-Step Method".POLYMERS 8.3(2016):1.
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