Preparation of branched polystyrene by free radical emulsion polymerization in the presence of functional monomer

Huang, Wenyan; Li, Jiating; Wu, Haiyan; Ren, Ziye; Wang, Shaoyu; Jiang, Qimin; Xue, Xiaoqiang; Yang, Hongjun; Jiang, Bibiao

doi:10.1080/14328917.2018.1478246

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…In 2000, Sherrington et al 5,20 suggested a novel synthesis approach commonly known as the Strathclyde method. In the presence of thiols, gel formation is suppressed by extensive chain transfer, and monovinyl monomers can be copolymerized with low levels of multivinyl monomers to prepare long-chain branched polymers, which proved to be a cost-effective route suitable for a range of vinyl monomers, including styrene, 21,22 methyl methacrylate, 5,20,23 and vinyl acetate. 24 Continuous polymerization processes are always preferred in the industrial production of bulk polymers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Branched Poly(butyl acrylate) Using the Strathclyde Method in Continuous-Flow Microreactors

Liang

Song

Qiu

et al. 2019

Ind. Eng. Chem. Res.

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Solution polymerization of butyl acrylate and divinylbenzene (DVB) in toluene, initiated with 2,2′-azobisisobutyronitrile and mediated with chain transfer agent dodecanethiol (DDT), was carried out in a capillary microreactor with a 1 mm inner diameter. Through the Strathclyde method, branched poly(butyl acrylate) with different molecular weight distributions (MWDs) was prepared by adjusting the feed formulation and the residence time. The dosages of DVB and DDT were controlled to avoid gelation, and their effects on the branching degree of the products were investigated. The multimodal MWDs were deconvoluted to quantitatively study the branching process. The kinetics in batch and continuous operation are compared. Aqueous miniemulsion polymerization with a similar feed formulation was also conducted in the microreactor, enabling faster reaction rate, lower solution viscosity, and higher branching efficiency. This study demonstrated the feasibility to use commercial monomers to prepare branched polymers with high functionality and a dense architecture in continuous-flow mode.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Branched Poly(butyl acrylate) Using the Strathclyde Method in Continuous-Flow Microreactors

Liang

Song

Qiu

et al. 2019

Ind. Eng. Chem. Res.

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“…In contrast, Jiang et al used a chain transfer monomer approach to generate hyperbranched polymers by FRP in emulsion. 22 This approach placed chain initiating groups, namely thiols and peroxides, within the pendant group of (meth) acrylic monomers, [23][24][25][26] enabling in situ branch point formation through chain transfer reactions with propagating radicals. Interestingly, the degree of branching achieved was highly dependent upon the relative magnitudes of the propagation and chain transfer rate constants, K p and K tr respectively; i.e.…”

Section: Introductionmentioning

confidence: 99%

Exploring telogen chemical structure and reactivity when forming highly branched polyesters derived from ethylene glycol dimethacrylate homopolymerisation under transfer-dominated branching radical telomerisation (TBRT) conditions

Flynn,

Linthwaite,

Penrhyn-Lowe

et al. 2023

Polym. Chem.

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“…Polystyrene is a commodity polymer with cumulative commercial applications. [1][2][3] Polystyrene is a homopolymer made up of styrene monomers. It is a thermoplastic engineering material.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Electrospun Exfoliated Graphite Nanosheets/Polystyrene composite nanofiber mats

Abdelhady

Elbadawi²,

Zoalfakar

2022

Journal of Thermoplastic Composite Materials

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The present study is an attempt to fabricate composite nanofiber mats from polystyrene (PS) loaded with exfoliated graphite nanosheets (EGNS) by using electrospinning technique. EGNS with different weight ratios of 3, 6, and 9 wt.% were added to PS (20 wt.%). The fiber diameter and morphology of the composite nanofiber mats were investigated by scanning electron microscopy (SEM). Results revealed that as EGNS concentration was increased, the average diameter of EGNS/PS electrospun nanofibers decreased. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to investigate the thermal properties. The tensile strengths and Young’s modulus of the composites improve with the increasing EGNS concentrations compared to PS nanofiber, which indicates 84% and 88% augmentation, respectively at 6 wt.% of EGNS. Also, the addition of EGNS increased thermal stability of composite nanofiber mats.

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Preparation of branched polystyrene by free radical emulsion polymerization in the presence of functional monomer

Cited by 4 publications

References 21 publications

Synthesis of Branched Poly(butyl acrylate) Using the Strathclyde Method in Continuous-Flow Microreactors

Synthesis of Branched Poly(butyl acrylate) Using the Strathclyde Method in Continuous-Flow Microreactors

Exploring telogen chemical structure and reactivity when forming highly branched polyesters derived from ethylene glycol dimethacrylate homopolymerisation under transfer-dominated branching radical telomerisation (TBRT) conditions

Fabrication of Electrospun Exfoliated Graphite Nanosheets/Polystyrene composite nanofiber mats

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