Acrylic acid emulsion polymerization - Search

Preparation and Properties of Organosilicon-Modified Acrylate Resin

Online since: February 2014

Authors: Xiao Jun Hu, Qing Bian, Jing Feng, Ming Chen, Wen Qin, Ya Nan Chen

Beijing, 100036, China)a,dHu-xj@mail.tsinghua.edu.cn, b.cbq66bq@126.com, e,fchenmab@126.com,Keywords: Organosilicon; acrylate resin; solution polymerization; silane coupling agentAbstract.
Organosilicon-modified acrylate resin was successfully prepared by solution polymerization and the effect of content of silica sol and silane coupling agent (KH570) on the resistance to water, acid, alkali and aging, the polymerization mechanism, structure were studied,respectively.
So organosilicon modified acrylic resin has become one of hot research topic in the field of coatings.
Silicone acrylate copolymer emulsion polymerization and the researchperformance[J].
The stability of theself-crosslinking organic siloxane modified acrylic emulsion[J].

Surface Properties and Application of Fluorinated Emulsifier-Free Emulsion Surface Sizing Agent

Online since: April 2013

Authors: Yi Ding Shen, Guan Jun Liu, Feng San Zhang, Ying Su, Xiao Rong Wang, Lei Wang, Xiao Juan Lai

Fluorinated emulsifier-free emulsion surface sizing agent (FEE) was prepared by emulsifier-free polymerization of hexafluoro-butyl methacrylate (FA), styrene (St) and so on in the presence of fuorinated random amphiphilic polymers (ASRF) copolymerized by FA, St and acrylatic acid.
In this paper, fluorinated random amphiphilic polymer(ASRF) was prepared by using hexafluoro-butyl methacrylate(FA),styrene(St) and butyl acrylate(BA) and used as stabilizer in emulsifier-free polymerization of fluorinated acrylate.
Hexafluoro-butyl methacrylate(FA), industrial products; Styrene(St), Butyl acrylate(BA), Acrylic acid(AA), Sodium hydroxide, Acetone, Sodium bicarbonate(NaHCO3), Potassium peroxydisulfate(KPS), Azodiisobutyronitrile(AIBN), Hydroxyethyl acrylate(HEA), all analytically pure; Oxidized starch(Carboxyl content is 0.65), industrial products; high purity water.
(a) (b)Fig. 3 Fiber morphologies of the samples (a)blank sample (b)sized sample SummaryFluorinated emulsifier-free emulsion surface sizing agent (FEE) was prepared by emulsifier-free polymerization of hexafluoro-butyl methacrylate (FA), styrene (St) and so on in the presence of fuorinated random amphiphilic polymers (ASRF) copolymerized by FA, St and acrylatic acid.
Salvini, New strategies for the synthesis of partially ﬂuorinated acrylic polymers as possible materials for the protection of stone monuments, Eur.

Surface Encapsulation of Nano-CaCO3 Particle by In Situ Emulsion Polymerization

Online since: October 2008

Authors: Ming Shan Yang, Ying Quan

Butyl acrylate (BA), MMA and acrylic acid (AA), commercial grade, were supplied by Beijing Dongfang Chemical Plant, Beijing, China.
In situ encapsulating emulsion polymerization of monomers onto the surface of nano- CaCO3 particles.
After 3 h, the second reaction, the seeded emulsion polymerization of MMA onto the previous particles, was subsequently performed with a dropped method.
Results and discussions The formulations and technology of in-situ emulsion polymerization on the surface of nano-CaCO3.
After many experiments, the optimum formulation of in-situ emulsion polymerization on the surface of nano-CaCO3 was obtained in this paper(see Table 1).

Preparation and Characterization of Fluorinated Acrylate Copolymer Emulsion

Online since: January 2015

Authors: Guo Rong Cao, Chun Yan Lu

A fluorinated acrylate copolymer emulsion with core-shell structure was synthesized by semi-continuous emulsion polymerization using methyl methacrylate (MMA ), butyl acrylate (BA) as the raw material, hexafluorobutyl methacrylate as fluorinated acrylate monomer, ammonium persulfate (APS) as initiator, sodium dodecyl sulfate (SDS) and polyoxyethylene octyl phenyl ether (OP-10) as emulsifier and taking water as dispersion medium.
IntroductionAcrylic acid ester paint has much excellent performance, such as wide raw material sources, low cost, wide application.
Experimental SectionMaterialsMethyl methacrylate（MMA）, butyl acrylate（BA）and acrylic acid（AA）monomers are supplied by Gunagfu chemical industry institute in Tianjin.
Comparative evaluation of fluorinated and unfluorinated acrylic copolymers as water-repellent coating materials for stone [J].
[7] Reza Iranpour, ZhaoJi, Wang,Aijie, Yang Fenglin and Li Xinyong, Study on Emulsion Polymerization of Fluorinated Acrylate and its Application [J], Advanced Materials Research ,2012,518,619-622[8] Li Xuefeng, Zhang Jingfang, Zhou Xingping, Lu Chuan, Tong Xiantao, He Guoxing and Wang Xiaqin, Synthesis of core-shell fluoroacrylate copolymer latex via emulsion polymerization and its application in ink-jet ink[J], Journal of Applied Polymer Science ,2012,126(1),110-115

Progress of Polyurethane/Acrylate Core-Shell Hybrid Emulsion

Online since: January 2015

Authors: Yang Yu, Xue Hua Cheng, Tao Wu, Xiu Lan Xin, Xiao Yan Yu

Besides, for the emulsion polymerization system, thermodynamic and kinetic controls in the whole course can also affect the stability of the final hybrid emulsions.
The core-shell hybrid emulsion polymerization relies on composite technology sprang up in the 1980s.
Y.C.Mu et al.[5] introduced a method to achieve the monodisperse and multilayer core-shell (MMLCS) by surface cross-linking emulsion polymerization.
L.Yang et al.[6] synthesized composite emulsions of TiO2/ polyurethane (PU) and TiO2/PMMA/PU, respectively, by situ seed polymerization method with silane coupling agent.
In addition, the novel design of synthetic line of PUA emulsion polymerization has always been the heat topic as well.

A Facile Method to Synthesize Responsive Magnetic Polymer Composite Nanoparticles with Multifunctional Groups

Online since: June 2014

Authors: Yue Qing Shen, Wei Jiang, Meng Lu Pu

Batch polymerization process is reported to be the most widely used method to synthesize microgel materials.13 Montagne et al.14 have firstly reported the use of o/w magnetic emulsion droplets as the seed in emulsion polymerization.
Reaction procedureThe possible reaction procedure of the mPDGs by the batch emulsion polymerization method is presented in Fig. 3.
New reactive epoxy-functionalized mPDGs are synthetized using seed emulsion polymerization of DVB and GMA monomers in the presence of Fe3O4 magnetic emulsion droplets as the seed.
Laftah, Synthesis, characterization, and morphology study of poly(acrylamide-co-acrylic acid)-grafted-poly(styrene-co-methyl methacrylate) “raspberry”-shape like structure microgels by pre-emulsified semi-batch emulsion polymerization, J.
Nagpal, Synthesis of poly(acrylamide-co-methyl methacrylate-co-vinyl amine-co-acrylic acid) hydrogels by Hoffman degradation and their interactions with acetaminophen, J.

Preparation of Salt-Resistance Superabsobent Microspheres by Inverse Suspension Polymerization

Online since: December 2011

Authors: Ming Zhou, Jin Zhou Zhao, Yan Yang

IntroductionSuperabsobent microspheres are the superabsorbent polymers (SAPs) who consist of lightly crosslinked networks of flexible polymer chains by inverse suspension polymerization or inverse emulsion polymerization.
The extreme solution viscosity generated by solution polymerization leads to problems such as the difficulties in stirring and heat transfer, and the resin is obtained as a lump that has to be cut, dried, and pulverized before use. these problems may be overcome by inverse suspension or emulsion polymerization [11-15], the polymerization is unstable and coagulation and flocculation might occur during the inverse suspension polymerization due to large particle size.
For example, acrylic acid (AA)–acrylamide (AM) based superabsorbent polymers (SAP) by inverse suspension polymerization is synthesized [16].
[2] Yuhong Zhang, Leming Wang and Xiaohong Li, Salt-resistant superabsorbents from inverse-suspension polymerization of PEG methacrylate, acryamide and partially neutralized acrylic acid, J.
[15] Doo-Won Lim, Kyong-Geun Song, Kee-Jong Yoon and Sohk-Won Ko, Synthesis of acrylic acid-based superabsorbent interpenetrated with sodium PVA sulfate using inverse-emulsion polymerization, European Polymer Journal 38(2002) 579-586

Synthesis of Polystyrene-b-poly(n-butyl acrylate)-b-Polystyrene Triblock Copolymers as Binder for Pigment Dyeing

Online since: January 2012

Authors: Dong Ming Qi, Cheng Jie Hu, Hai Yang, Lei Yang

Well-controlled polystyrene-b-poly(n-butyl acrylate)-b-polystyrene (PSt-b-PnBA-b-PSt) triblock copolymers were prepared by RAFT (reversible addition-fragmentation chain transfer) emulsion polymerization process.
Acrylic acid (AA), styrene (St) and n-butyl acrylate (nBA) were distilled under reduced pressure prior to use.
The small RAFT agent, 2-((dodecylsulfanyl carbonothioyl) sulfanyl)propanoic acid (DCSPA) was synthesized and prified as described in the reference 8.2.2 Synthesis of Poly(acrylic acid )30-Polystyrene5 MacroRAFT agent.
During 30 min deoxygenation by nitrogen purging, the temperature was increased to 70 oC. 0.012 g of initiator (KPS, dissolved in 3.0 g deionized water) was injected to start the emulsion polymerization. 0.05 g of NaOH was dissolved in 0.5 g deionized water and injected into the reactor 40 min after the starting of the polymerization.
T., et al, Effective ab Initio Emulsion Polymerization under RAFT Control, Macromolecules. 35-25 (2002) 9243-9245

Preparation and Properties of Emulsion Coating of Polyacrylate Modified by In-Situ Nano-Hybrid Silica

Online since: May 2011

Authors: Hong Qiu Lv, Xue Fang Zhang, Jun Gang Gao

Tetraethoxysilane (TEOS) was added as the precursor of SiO2 in the late of the emulsion polymerization.
The nano-hybrid emulsion coating has a good performance, such as good acid-alkali resistance and hardness.
There are many methods to prepare inorganic-organic hybrid nano-composites [2], such as blending method, intercalation polymerization, in-situ sol-gel method and so on.
In this work, Tetraethoxysilane (TEOS) was added as the precursor of SiO2 in the emulsion polymerization.
Tetraethoxysilane (TEOS), methyl methacrylate(MMA), methyl ethyl acrylate (EA), butyl acrylate (BA), and acrylic acid (AA), Potassium persulfate (KPS, initiator ), sodium dodecyl benzene sulfonate (SDBS) and tween-80, et al were all of analytical grade, and supplied by the Beijing Chemical Reagent Co.

Preparation of Core-Shell Particles Consisted of Polysiloxane and Styrene-Butyl Methacrylate by High Internal Phase Emulsion

Online since: October 2014

Authors: Ping Kai Jiang, Zhen Qi Zhang, Zhen Gang Ding, Xiao Tian Hou, Shao Jin Jia

IntroductionStyrene-acrylic emulsion is a product containing styrene and acrylate or functional group acrylate monomers on emulsion polymerization.
Synthesis of Polysiloxane and styrene-butyl methacrylateD4 ring-opening pre-polymerization: Quantitative D4 and a small amount of hydrochloric acid(1-2% content of monomer) were put into the water bath for 1 hour reaction at 60˚C~90˚C.
BMA pre-polymerization: The BMA was pre-polymerized for 30-100min under 60˚C in 15ml centrifuge tube in water bath.
A St-BMA-D4 triplicity particle can be made by the method of concentrated emulsion polymerization.
Conclusions The stable emulsion system is achieved after monomer pre-polymerization in the process which St-BMA concentrated emulsion modified by silicone.

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