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[JPR] Preparation of diblock copolymer PBA-b-PSt by DPE method in emulsion
Diblock copolymer poly (butyl acrylate)-b-polystyrene (PBA-b-PSt) was prepared by two steps in a complete emulsion system, using DPE (1, 1-diphenylethylene) as free radical control agent. In the first step, butyl acrylate (BA), initiator potassium peroxodisulfate (KPS) and DPE were emulsion polymerized to form P(BA-DPE) precursor. Then the precursor was heated in the presence of a second monomer...
http://www.polymer.cn//ss/zhangqiuyu/publicationsshow_7823.html |
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Hollow microspheres with covalent-bonded colloidal and polymeric shell by Pickering emulsion polymerization
Hollow microspheres with SiO2/polymer binary shell were fabricated from Pickering emulsion stabilized solely by methacryloxypropyltrimethoxysilane-modified SiO2 particles, and were characterized by optical microscopy, scanning electron microscopy, Fourier transformation infrared spectrum, thermogravimetric analysis (TGA), and energy dispersive X-ray spectroscopy. The microspheres were templ...
http://www.polymer.cn//ss/zhangqiuyu/publicationsshow_7816.html |
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Effect of Reactive Emulsifier on the Emulsion Polymerization of Acrylate with Hydroxyl Monomer
The emulsion copolymerization composing of
butyl acrylate, methyl methacrylate, hydroxylethyl methacrylate and acrylic
acid using reactive emulsifier R208 and AOPS-1 was studied at different emulsifier
type, level of emulsifier and initiator, reactive temperature with
regard to monomer
conversion. The particle size and distribution of the emulsion were
also investigated.
It indicated that reacti...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_7804.html |
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Polylactide Hollow Spheres Fabricated by Interfacial Polymerization in an O/W Emulsion System
A one-step pathway hasbeen adopted to fabricate biodegradable polylactide (PLA) hollow spheresby interfacial polymerization in an oil-in-water emulsion system. The mechanism of sphere formation is
suggested with respect to interfacial cross-linking polymerization and subsequent precipitation of the unreacted PLA macromonomers onto the preformed shells. Their hollow nature and morphology were veri...
http://www.polymer.cn//ss/bingbingjiang/publicationsshow_4610.html |
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Synthesis of Polymeric Yolk-Shell Microspheres by Seed Emulsion Polymerization
pubs.acs.org/doi/abs/10.1021/ma102477u
The convenient synthesis of polymeric yolk−shell microspheres, which possess a hollow shell and an encapsulated spherical core, is both an interest and challenge in polymer chemistry. A method for the synthesis of polymeric yolk−shell microspheres by seed emulsion polymerization is proposed. The present synthesis includes a procedure for swelling...
http://www.polymer.cn//ss/zhangwangqing/publicationsshow_4021.html |
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Polymer-inorganic hybrid microparticles with hierarchical structures by interfacial instabilities of emulsion droplets
Wang, N. X., Liao, Y. G., Deng, R. H., Liu, S. Q., Cao, N., Tan, B., Zhu, J. T.*, Xie, X. L. Polymer-inorganic hybrid microparticles with hierarchical structures by interfacial instabilities of emulsion droplets. Soft Matter, 2012, 8, 2697-2704.
http://www.polymer.cn//ss/jintaozhu/publicationsshow_3512.html |
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Reactivity Ratio of Emulsion Copolymerization of Fluorinated Gaseous Monomers-Vinylidene Fluoride and Hexafluoropropylene
The apparent reactivity ratios of hexafluoropropylene (HFP)/vinylidene fluoride (VDF) emulsion copolymerization were obtained by nonlinear fitting according to the copolymer composing equation, which, according to the calculation, are 1.88 and 0.86 respectively. The constitution of mixed gaseous monomers was measured through the gas chromatography. The copolymer compositions before and after react...
http://www.polymer.cn//ss/liuxiaoyun/publicationsshow_2890.html |
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The Effect of Initiator System on Acrylate Emulsion Copolymerization with Higher Hydroxyl Monomer Content
The influence of the initiator (ammonium persulfate, APS) and APS/reducer system on the acrylate
emulsion copolymerization of methyl methacrylate/butyl acrylate/acrylic acid/hydroxylethyl
methacrylate (HEMA) was studied. The initiator level, reaction temperature, reducer type and
reducer level on the effect of polymerization rate, particle size and size distribution were
investigated. It was f...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_2260.html |
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Study on Acrylic Emulsion Containing High Hydroxyl Content with core-shell Structure
Using butyl acrylate, styrene, hydroxylethyl methacrylate and acrylic acid as comonomers, emulsions containing high hydroxyl content and having core-shell structure were synthesized from semi-continuous seed emulsion polymerization methods. Emulsifier types and levels, reaction temperature, core composite, weight percent of core on stability of the emulsion polymerizations were investigated. It wa...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_2257.html |
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Preparing of Styrene-Acrylate Emulsion Using Nano-SiO2 as seeds
A styrene-acrylic/SiO2 nanoparticle composite emulsion was prepared by using SiO2
nanoparticles as seeds. The effect of factors such as the level of nano-SiO2, reaction temperature
and ultrasound treatment of nano-SiO2 on the stability of the polymerization reaction was investigated.
Water-resistance of the emulsion was measured. The level of nano-SiO2 in the emulsion was determined by
inducti...
http://www.polymer.cn//ss/zhangfaai/publicationsshow_2255.html |
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