Domain Morphology of Star Block Copolymers of Polystyrene and Polyisoprene

Bi, Le-Khac; Fetters, L. J.

doi:10.1021/ma60043a026

Cited by 62 publications

(22 citation statements)

References 4 publications

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“…Two kinds of polymer molecules may be combined in many ways to produce interesting materials. Well‐known examples include polymer blends,1, 2 graft copolymers,3, 4 block copolymers,5 and AB crosslinked polymers 6–13. The term AB crosslinked polymer (ABCP) refers to a polymer in which chains of polymer A are connected by long crosslinks of a chemically different polymer B at both ends or at various points along the chains 7.…”

Section: Introductionmentioning

confidence: 99%

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

Sriram¹,

Palanisamy²,

Kannan³

et al. 2001

J of Applied Polymer Sci

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ABSTRACT:Vinyl-terminated polyurethane (VTPU) was prepared by end-functionalizing isocyanate-terminated prepolymers with 2-bromoethanol and subsequently quartenizing with 4-vinylpyridine. The vinyl functionality was then effectively utilized for preparing AB crosslinked polymers (ABCPs) with methyl methacrylate (MMA). ABCPs prepared with variable weight ratios on PTMG 1000 -based VTPU/MMA (8/2, 6/4, 5/5, 4/6, 2/8) and those prepared at a 5/5 weight ratio with different polyols (PTMG 1000 , PPG 1000 , and PCL 1250 ) in VTPU were characterized by Fourier transform infrared spectroscopy (FTIR) and further analyzed for thermal and mechanical properties. FTIR spectral results confirm quartenization of heterocyclic nitrogen, leading to crosslinking. Thermogravimetric analyses show enhanced thermal stability of the crosslinked systems. The stress-strain measurements reveal increasing tensile strength with increasing amounts of MMA. Comparison of dynamic mechanical spectra of ABCPs based on PTMG 1000 shows that the 5/5 composition exhibits good damping over a broad temperature range.

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Section: Introductionmentioning

confidence: 99%

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

Sriram¹,

Palanisamy²,

Kannan³

et al. 2001

J of Applied Polymer Sci

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“…sessing more than 10 arms is by cross-linking monocarbanioOn the other hand, de la Cruz and Sanchez (6) have nic chains with DVB (13)(14)(15)(16). calculated the phase stability criteria and static structure facMore recently, we synthesized PI stars by the free-radical tors in the weak segregation regime for n-arm diblock copol-cross-linking of the vinylbenzyl-terminated PI macromonoymers [(AB) n star].…”

Section: Introductionmentioning

confidence: 99%

Superlattice Formation on Star Polymer Solutions

Ishizu

Ono

Uchida

1997

Journal of Colloid and Interface Science

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“…The enhancement of tensile strength saturated when the number of arms larger than six. Morphological analysis indicated multi-arm star polymers had smaller PS domain size as compared with linear polymers with the same molecular weight [89]. Thus, star polymers had more condensed physical cross-links per unit volume, which were atributed to their higher tensile strength.…”

Section: Star-branched Copolymer-type Tpesmentioning

confidence: 97%

Thermoplastic Elastomers Based on Block, Graft, and Star Copolymers

Wang¹,

Lu²,

Kang³

et al. 2017

Elastomers

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In this book chapter, we focus on recent advances in thermoplastic elastomers based on synthetic polymers from the aspects of polymer architectures such as linear block, graft, and star copolymers. The irst section is an introduction that covers a brief history and classiication of thermoplastic elastomers (TPEs). The second section summarizes ABA triblock copolymers synthesized by various methods for TPE applications. The third section reviews TPEs based on graft copolymers, and the fourth section reviews TPEs based on star copolymers. The diferences between TPE research in academia and industry are addressed in the last section as a perspective, with a view toward the generation of new, advanced, commercially viable TPEs.

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Domain Morphology of Star Block Copolymers of Polystyrene and Polyisoprene

Cited by 62 publications

References 4 publications

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

Superlattice Formation on Star Polymer Solutions

Thermoplastic Elastomers Based on Block, Graft, and Star Copolymers

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