2000
DOI: 10.1002/pen.11350
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Physical properties of isobutylene based block copolymers

Abstract: Physical, mechanical and thermal properties of a new class of isobutylene based model block copolymers are studied and contrasted with those of traditional thermoplastic elastomers based on polydienes and saturated polydienes (polyolefins) such as Kraton (or Vector) and Kraton G block copolymers. Melt state rheological and dynamic mechanical measurements confirm that thermodynamic interactions between polystyrene (S) and polyisobutylene (iB) or poly‐p‐tert‐butylstyrene (tbS) and iB are comparable to, if not la… Show more

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Cited by 10 publications
(9 citation statements)
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“…The polymers used to prepare nanocomposites include a series of model polystyrenes with narrow molecular weight distribution and obtained from Pressure Chemicals Co. The model poly(isobutylene- co - p -methylstyrene) (10 wt % PMS) was prepared by living cationic polymerization . The relevant molecular characteristics of the polymers are provided in Table .…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The polymers used to prepare nanocomposites include a series of model polystyrenes with narrow molecular weight distribution and obtained from Pressure Chemicals Co. The model poly(isobutylene- co - p -methylstyrene) (10 wt % PMS) was prepared by living cationic polymerization . The relevant molecular characteristics of the polymers are provided in Table .…”
Section: Methodsmentioning
confidence: 99%
“…The model poly(isobutylene-co-p-methylstyrene) (10 wt % PMS) was prepared by living cationic polymerization. 20 The relevant molecular characteristics of the polymers are provided in Table 1.…”
Section: Introductionmentioning
confidence: 99%
“…These sections were stained with RuO 4 ͑a stain preferentially taken up by PS͒ and then examined using a 160 keV Phillips EM 300 TEM, as described earlier. 14 SANS measurements were performed on the 30 m SANS beamline ͑NG3͒ at NIST, Gaithersburg, MD. Neutrons with wavelength ͑͒ of 6 Å and ⌬/ of 0.15 were used with sample to detector distances ranging from 5 to 6.5 m. Quiescent experiments were performed by placing a 1 mm thick sample in a 17 mm annulus sandwiched between two quartz windows and heated in a sealed oven.…”
Section: Methodsmentioning
confidence: 99%
“…Researchers have estimated that the ODT of SIBS is greater than 300 °C [16], which is well above the thermal degradation limits of the material. Therefore, the domain dissolution mechanism is not applicable to this material.…”
Section: Electric Field-induced Orientation In Block Copolymersmentioning
confidence: 99%