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Chinese Journal of Polymer Science 2016年第6期34卷 688-696页

作者： Cun-wei Zhang Rong-jie Yang 李向梅 De-qi Yi National Engineering Research Center of Flame Retardant Materials School of Materials Beijmg Institute of Technology Beijing 100081 China Fire Command Department Chinese People's Armed Police Forces Academy Langfang 065000 China

Polystyrene （PS）/triphenyl phosphate （TPP） composites were prepared by both suspension polymerization and melt extrusion, and a comparative study of the flame retardance and mechanical properties was carried out. The results showed that suspension polymerization was a better technique than melt extrusion for obtaining good dispersity of the PS/TPP composite. The TPP nanoparticles, which were approximately 50 nm in size, were homogenously and uniformly dispersed in the PS matrix by suspension polymerization in one-step. However, the PS/TPP composite was partially agglomerated, exhibiting irregularly shaped micron-scale particles as a result of melt extrusion. In contrast to the melt extrusion, the limited oxygen index （LOI） of the PS/TPP nanocomposite by suspension polymerization increased to 22.6% from 21.8%, and time to ignition （TTI） increased by 12.3%, the peak heat release rate （PHRR） decreased by 8.5%, and the total heat release （THR） decreased by 11.0%. The mechanical properties of the PS/TPP nanocomposite by suspension polymerization also increased. The tensile strength, elongation at break, and flexural strength increased by 36.4%, 8.5%, and 108%, respectively.

关键词： Polystyrene Triphenyl phosphate Flame retardance suspension polymerization Melt extrusion.

Synthesis of Molecularly Imprinted Polymer Particles by suspension polymerization in Silicon Oil

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Chinese Chemical Letters 2006年第9期17卷 1243-1246页

作者： Xiao Bing WANG Zhao Hui ZHENG Xiao Bin DING Xu CHENG Xin Hua HU Yu Xing PENG Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 Graduate School of the Chinese Academy of Sciences Beijing 100081

Molecularly imprinted polymers using 2,4-dichlorophenoxyacetic acid （2,4-D） as templates were prepared by suspension polymerization in silicon oil. The polymer particles exhibited regular shape in the micro-scale range. The adsorbing experiments indicated that the imprinted polymer particles possessed higher affinity to 2,4-D than the non-imprinted polymer particles.

关键词： Molecularly imprinted polymer particles suspension polymerization silicon oil.

A Population Balance Model for Disperse Systems:Particle Size Distribution in suspension polymerization

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Chinese Journal of Chemical Engineering 1999年第4期7卷 332-344页

作者：陈中 Werner Pauer H.-U.Moritz Jan Prss Hans-Joachim Warnecke Chemical Engineering University of PaderbornPaderborn 33098Germany

On the basis of population balance a mathematical model is developed to describe the formation of polymer particle in styrene suspension polymerization. The characteristics of coalescence and breakage of droplets and the gel effect are analyzed in particular. Parameters of the models are estimated by experimental data on reaction conversion and particle size distribution. The results show that the model is suitable for predicting polymerization processes.

关键词： population balance model styrene suspension polymerization particle size distribution

Preparation of Macroporous Poly (vinyl alcohol-co-triallyl isocyanurate) Beads Bearing Aminocarboxylic Acid as Functional Groups by suspension polymerization

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Chinese Chemical Letters 2003年第3期14卷 267-269页

作者： Hai Tao LI Ke Yu SHI 等 DepartmentofChemistry HunanNormalUniversityChangsha410081 TheStateKeyLaboratoryofFunctionalPolymerMaterialsforAdsorptionandSeparation InstituteofPolymerChemistrynankaiUniversity

Macroporous poly (vinyl acetate-co-triallyl isocyanurate) beads were prepared with suspension polymerization method. The copolymer beads were then transformed into poly (vinyl alcohol-co-triallyl isocyanurate) by ester exchange reaction. Aminocarboxylic acids were immobilized on the copolymer beads by the esterification of hydroxyl groups with diethyl-lenetriaminepentaacetic bisanhydride. The weak acid exchange capacities, specific surface areas and mean pore diameters of the resultant resin beads were measured.

关键词： Macroporous adsorption resin suspension polymerization poly (vinyl alcohol-co-triallyl isocyanurate) aminocarboxylic acid.

Preparation and property of porous hydroxyapatite as an inorganic dispersant used in suspension polymerization

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Frontiers of Chemical Science and Engineering 2008年第1期2卷 49-54页

作者： Kaqiu XU Jiale XU Yuhong WANG School of Chemical Engineering Sichuan UniversityChengdu 610065China

The porous hydroxyapatite(HAP)for suspen-sion polymerization dispersant was prepared using calcium carbonate and phosphoric acid as raw *** samples were characterized by scanning electron micro-scopy(SEM),X-ray diffraction(XRD)and BET nitrogen *** results show that the prepared HAP has a porous structure,low particle density,large specific surface area,uniform particle size and does not agglomerate easily between the *** preparation conditions for the HAP were optimized as follows:solid content of calcium carbonate aqueous suspension 90 g/L,concentration of phosphoric acid 1.0 mol/L,reaction/aging temperature 50℃,and aging time 3 *** HAP prepared under optimal preparation conditions has 106.8 m^(2)·g 21 of specific surfacearea,whichisabout1.5–1.8timesasmuchasthatof *** the suspension polymerization of styrene show that the porous HAP dispersant has high surface activity,excellent suspension dispersibility and stability and can markedly improve the quality of polystyrene beads.

关键词： hydroxyapatite porous structure inorganic dispersant suspension polymerization

THE MECHANISM OF POLY (VINYL CHLORIDE) PARTICLE FORMATION DURING THE suspension polymerization PROCESS

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Progress in Natural Science:Materials International 1992年第1期 54-62页

作者：蔡启振韩冬林黄志明翁志学潘祖仁 State Key United Chemical Engineering Laboratory polymerization Reaction Engineering Branch Zhejiang University Hangzhou 310027 PRC State Key United Chemical Engineering Laboratory polymerization Reaction Engineering Branch Zhejiang University Hangzhou 310027 PRC

Poly (vinyl chloride) (PVC) resin was sampled with a special cell from the autoclave at differentstages of suspension polymerization. The samples keeping the original morphology and structure wereexamined by scanning electromicroscopy (SEM). It shows that the formation of PVC primary particlereaults from simultaneous propagation and agglomeration. The primary particles within the grainsagglomerate to form continuous network further so that PVC grains are porous. The morphology andstructure of grains are mainly controlled by such factors as polymerization temperature, agitation andproperties of dispersant solution.

关键词： poly (vinyl chloride) primary particle morphology suspension polymerization

Preparation of Poly (MMA-S-DVB) Microspheres by suspension polymerization Method

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Preparation of Poly (MMA-S-DVB) Microspheres by Suspension P...

AQUEOUS STABLE FREE RADICAL polymerization PROCESSES

中国材料大会2012

作者： Siqun Chen Zicai Sun Xiaowei Wang Xiaohui Chen Jianjun Chen National Engineering Reasearch Center of Chemical Fertilizer Catalyst Fuzhou University Shenzhen Public Technical Service Platform for Energy Conversion and Storage Research Institute of Tsinghua University In Shenzhen

ISBN: (纸本)9783037856079;3037856076

In this work, Poly(methy methacrylatestyrenedivinyl benzene) (MMA-S-DVB) microspheres were prepared by suspension polymerization approach in the presence of n-dodecane as porogenic agent. Various types of measurements,such as binocular biological microscope with micrometer, fourier transform infrared (FT-IR) and N2 absorption analysis (BET) were conducted to characterize the MMA-S-DVB microspheres. The effect of the amount of surfactants (PVA and NaCl), porogenic agent and crossing agent(DVB) on the morphology of microspheres was investigated and mass ratio of oil/water and the stirring speed were also discussed. Finally, according to the experimental results,the optimum experimental condition was obtained as follow: the mass ratio of S:MMA:DVB=3:3:4, the concentration of PVA in the water phase is 2.2 wt %, the concentration of NaCl is 5 wt %, the mass ratio of oil/water is 1:11, the stirring speed is *** controlling the optimum reaction conditions of the suspension polymerization, the crosslinked macroporous resin polymer MMA-S-DVB microspheres with excellent sphericity and controllable diameter in a range of 20000 μm can be gained.

关键词： Methyl methacrylate Divinyl benzene suspension polymerization Macroporous resin microsphere.

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Chinese Journal of Polymer Science 2004年第4期22卷 309-312页

作者： Andrea R. Szkurhan Michael K. Georges University of Toronto at Mississauga 3359 Mississauga Road North South Building Mississauga Ontario L5L 1C6University of Toronto at Mississauga 3359 Mississauga Road North South Building Mississauga Ontario L5L 1C6

An overview of aqueous polymerizations, which include emulsion, miniemulsion and suspension polymerizations, under stable free radical polymerization (SFRP) conditions is presented. The success of miniemulsion and suspension SFRP polymerizations is contrasted with the difficulties associated with obtaining a stable emulsion polymerization. A recently developed unique microprecipitation technique is referenced as a means of making submicron sized particles that can be used to achieve a stable emulsion SFRP process.

关键词： Stable free radical polymerization Living-radical polymerization Aqueous polymerization Miniemulsion polymerization Emulsion polymerization suspension polymerization

Preparation and Performance of n-Dodecane Microencapsulated Phase Change Cold Storage Materials

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Journal of Renewable Materials 2023年第2期11卷 689-705页

作者： Pan Zhang Lingling Xu Xin Shi Zemeng Guo Jiajia Cheng College of Materials Science and Engineering Nanjing Tech UniversityNanjing211816China

Cold chain transportation is currently a hot research *** the traditional refrigeration methods lead to the consumption of large amounts of energy,the search for new energy storage materials is a major *** the present contribution,n-dodecane/PMMA microencapsulated phase change materials were prepared by suspension polymerization for ice-temperature cold chain transportation and their preparation parameters were explored using the encapsulation ratio as optimization *** results show that the n-dodecane-containing microcapsules have a maximum encapsulation ratio of 93.2%when using a core-to-wall ratio of 3:1,5%of emulsifier,30%of crosslinker,and 2000 rpm of emulsification *** phase transition temperature and enthalpy are-2℃and 195.9 kJ/kg,*** microcapsules prepared with the optimized process parameters have good microscopic morphology,high energy storage efficiency,uniform particle size and good thermal stability,making them ideal materials for cold chain transportation.

关键词： Phase change microcapsules n-dodecane suspension polymerization cold storage

Preparation and properties of thermoexpandable polymeric microspheres

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Chinese Chemical Letters 2014年第9期25卷 1279-1281页

作者： Zhao-Sheng Hou Cheng-You Kan College of Chemistry Chemical Engineering and Materials ScienceCollaborative Innovation Center of Functionalized Probes for Chemical ImagingKey Laboratory of Molecular and Nano ProbesMinistry of EducationShandong Normal University Department of Chemical Engineering Tsinghua University

In this paper, thermoexpandable polymeric microspheres were prepared by suspension polymerization with acrylonitrile （AN） and methyl methacrylate （MMA） as monomers and/-butane as a blowing agent. The micromorphology and thermal stability were researched by polarized microscopy and TGA. The diameter of the expandable microspheres increased from about 20μm （unexpanded） to 40-80 μm （expanded） upon heating. The maximum expansion volume was higher than 22 times of the original volume and the density of the expanded microspheres was about 16.7 kg/m3. The blowing agent content in microspheres was about 20 wt% and To.e., Tm.e. and To.s. were 80℃, 120-130℃ and 140-145℃, respectively.

关键词： Expandable microspheres suspension polymerization Methyl methacrylate Properties