The effect of hard and soft segment composition and molecular architecture on the morphology and mechanical properties of polystyrene–polyisobutylene thermoplastic elastomeric block copolymers

Puskás, Judit E.; Antony, Prince; Fray, Mirosława El; Altstädt, Volker

doi:10.1016/s0014-3057(03)00130-7

Cited by 75 publications

(76 citation statements)

References 19 publications

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“…In fact, the tensile properties of the SIBS nanofibre during the first stretch resemble those of thermoplastic elastomers that have a higher volume fraction of glassy polymer resulting in a continuous phase of glassy polymer rather than the equilibrium isolated spherical domains of the SIBS used here. 83,84 It is possible that the electrospinning process produces an unusual, non-equilibrium microstructure of continuous PS phase with dispersed rubbery domains. During tensile extension, these glassy PS regions yield and break-up to form a discontinuous phase which then resembles the typical equilibrium structure of SIBS.…”

Section: Resilience Of Thermoplastic Elastomer Nanofibresmentioning

confidence: 99%

Tensile testing of individual glassy, rubbery and hydrogel electrospun polymer nanofibres to high strain using the atomic force microscope

et al. 2013

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The production and use of polymer nanofibre assemblies prepared by electrospinning is now widespread. It is known that the tensile properties of electrospun polymer fibres can be different to those of bulk polymers. Here, we report a general method for measuring the tensile properties of individual electrospun nanofibres that employs a commercial atomic force microscope. Methods for preparing samples, force calibration and calculation of tensile stress and strain are described along with error estimation. By appropriate choice of AFM cantilever, it is shown that the tensile stress-strain curves can be measured for glassy, rubbery and gel polymer nanofibres. Testing can be in air or fluid and to strains of 300%. Example results illustrate the usefulness of the technique with the observation of high ductility in normally brittle glassy polymers such as polystyrene, and unusually large hysteresis in thermoplastic elastomer nanofibres. These observations provide new insights into the structure and mechanical behaviour of nanoscale polymeric materials. 2013 Elsevier Ltd. All rights reserved. AbstractThe production and use of polymer nanofibre assemblies prepared by electrospinning is now

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Section: Resilience Of Thermoplastic Elastomer Nanofibresmentioning

confidence: 99%

Tensile testing of individual glassy, rubbery and hydrogel electrospun polymer nanofibres to high strain using the atomic force microscope

et al. 2013

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“…We continued investigating structure-property relationships in PIB-PS block copolymers, and developed new carbocationic initiators, and new PIB-based structures. [51][52][53][54][55][56][57][58][59][60][61][62][63][64] We consider linear triblock PS-PIB-PS (Fig. 1) the first generation of this new class of TPEs, with multiarm-star PIB-PS being the second generation and arborescent PIB-PS the third generation.…”

Section: Pib-based Biomaterials Research In the Macromolecular Engineementioning

confidence: 99%

“…The tensile strength values are lower than the 17-24 MPa with 600 -800% elongation published for linear PS-PIB-PS triblocks 52,58 but comparable to the tensile strength of commercially produced, test-marketed PS-PIB-PS ( ϭ 10 MPa, ⑀ ϭ 600%). 59 Importantly, all of these values exceed the strength of soft tissues. 1 AFM studies of the arborescent blocks revealed irregular phase morphologies.…”

Section: Aborescent Pib-ps Block Copolymers By Inimer-type Living Polmentioning

confidence: 99%

Polyisobutylene‐based biomaterials

Puskás

Chen

Dahman

et al. 2004

J. Polym. Sci. A Polym. Chem.

123

121

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This article highlights the biomaterial-related research of the Macromolecular Engineering Research Centre (MERC). The MERC group concentrated on polyisobutylene (PIB)-based biomaterials. In this article, first the unique properties of PIB are discussed, followed by a review of PIB-based potential biomaterials. MERC's systematic research program aimed to develop novel PIB-based biomaterials is then highlighted, including surface modification and biocompatibility studies.

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“…3,4 Some of the common thermoplastic elastomers are segmented polyurethane, poly(styrene-b-butylene-b-styrene), poly-(styrene-b-isoprene-b-styrene), and poly(styrene-bisoprene). [1][2][3][4][5] For examples, poly(styrene-b-isopreneb-styrene) and poly(styrene-b-isoprene) are generally used for pressure sensitive applications, where durability and elasticity are important. 4,5 In recent years, electrostatic spinning or electrospinning has been viewed as a simple and versatile method for fabricating ultrafine fibers with diameters in the nanometer to sub-micrometer range.…”

mentioning

confidence: 99%

“…[1][2][3][4][5] For examples, poly(styrene-b-isopreneb-styrene) and poly(styrene-b-isoprene) are generally used for pressure sensitive applications, where durability and elasticity are important. 4,5 In recent years, electrostatic spinning or electrospinning has been viewed as a simple and versatile method for fabricating ultrafine fibers with diameters in the nanometer to sub-micrometer range. [6][7][8] The heart of the technique is the use of a high electrical potential applying to a spinning liquid across a charged nozzle and a grounded screen collector.…”

mentioning

confidence: 99%

Electrospinning of Styrene-Isoprene Copolymeric Thermoplastic Elastomers

Chuangchote

Sirivat

Supaphol

2006

Polym J

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ABSTRACT:In the present contribution, electrospinning of two chemically distinct thermoplastic elastomers based on block copolymers of styrene and isoprene [i.e., multi-armed poly(styrene-b-isoprene) (PS-PI) and linear poly-(styrene-b-isoprene-b-styrene) (PS-PI-PS)] was reported for the first time. Either 1,2-dichloroethane or chloroform was used as the solvent. The effects of solution concentration, solvent, applied electrical potential, chemical structure of the thermoplastic elastomers, and solution feed rate on morphological appearance and/or size of the as-electrospun products were investigated mainly by means of scanning electron microscopy (SEM). The electrospinnability of the polymer solutions was found to increase with increasing solution concentration. The size of the as-spun products from PS-PI solutions in 1,2-dichloroethane was consistently smaller than that of the products from the solutions in chloroform. The increase in the applied electrical potential caused the size of the as-spun products from both types of the polymer solutions to decrease monotonously or decrease with initial increase in the applied potential, reach a minimum at an intermediate value, and increase with further increasing applied potential. Despite the difference in the chemical structure of the two elastomers, the viscosity of their solutions in 1,2-dichloroethane was essentially similar, but the size of the as-spun products from PS-PI solutions was consistently larger than that of the products from PS-PI-PS solutions. [doi:10.1295/polymj.PJ2005234] KEY WORDS Electrospinning / Thermoplastic Elastomer / Block Copolymer / Thermoplastic elastomers are unique class of polymers which have physical and mechanical properties like vulcanized rubbers but can be processed by conventional thermoplastic processes.

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The effect of hard and soft segment composition and molecular architecture on the morphology and mechanical properties of polystyrene–polyisobutylene thermoplastic elastomeric block copolymers

Cited by 75 publications

References 19 publications

Tensile testing of individual glassy, rubbery and hydrogel electrospun polymer nanofibres to high strain using the atomic force microscope

Tensile testing of individual glassy, rubbery and hydrogel electrospun polymer nanofibres to high strain using the atomic force microscope

Polyisobutylene‐based biomaterials

Electrospinning of Styrene-Isoprene Copolymeric Thermoplastic Elastomers

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