Evaluation of interfacial region of microphase-separated SEBS using modulated differential scanning calorimetry and dynamic mechanical thermal analysis

Nireeksha S. Karode; Anup Poudel; Laurence Fitzhenry; Siobhán Matthews; Philip R. Walsh; Austin B. Coffey

doi:10.1016/j.polymertesting.2017.07.006

Evaluation of interfacial region of microphase-separated SEBS using modulated differential scanning calorimetry and dynamic mechanical thermal analysis

Nireeksha S. Karode, Anup Poudel, Laurence Fitzhenry, Siobhán Matthews, Philip R. Walsh, Austin B. Coffey

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The continuous structural changes of Poly(styrene-b-ethylene-butylene-b-styrene) [SEBS] due to the effect of temperature are hard to evaluate using conventional differential scanning calorimetry (DSC). This paper presents an accurate and simple way to evaluate microstructural and glass transitions of SEBS using modulated differential scanning calorimetry (MDSC). The weak crystalline nature of –(CH₂-CH₂)–_n in the ethylene-butylene (EB) block melted around 36 °C. The premature molecular moment and Tg of the styrene block were at 62 °C and 96 °C, respectively. The interfacial region at high temperature was explained with respect to order-order transition (OOT) at 144 °C and a prominent Order-Disorder Transition (ODT) at around 202 °C. Dynamic mechanical thermal analysis (DMTA) and dynamic mechanical rheological testing (DMRT) measurements also revealed that the T_g of the PS transition were consistent at around 96 °C.

Original language	English
Pages (from-to)	268-277
Number of pages	10
Journal	Polymer Testing
Volume	62
DOIs	https://doi.org/10.1016/j.polymertesting.2017.07.006
Publication status	Published - Sep 2017

Keywords

Glass transition
Non-reversing heat capacity
Reversing heat capacity
Tan delta

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10.1016/j.polymertesting.2017.07.006

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title = "Evaluation of interfacial region of microphase-separated SEBS using modulated differential scanning calorimetry and dynamic mechanical thermal analysis",

abstract = "The continuous structural changes of Poly(styrene-b-ethylene-butylene-b-styrene) [SEBS] due to the effect of temperature are hard to evaluate using conventional differential scanning calorimetry (DSC). This paper presents an accurate and simple way to evaluate microstructural and glass transitions of SEBS using modulated differential scanning calorimetry (MDSC). The weak crystalline nature of –(CH2-CH2)–n in the ethylene-butylene (EB) block melted around 36 °C. The premature molecular moment and Tg of the styrene block were at 62 °C and 96 °C, respectively. The interfacial region at high temperature was explained with respect to order-order transition (OOT) at 144 °C and a prominent Order-Disorder Transition (ODT) at around 202 °C. Dynamic mechanical thermal analysis (DMTA) and dynamic mechanical rheological testing (DMRT) measurements also revealed that the Tg of the PS transition were consistent at around 96 °C.",

keywords = "Glass transition, Non-reversing heat capacity, Reversing heat capacity, Tan delta",

author = "Karode, {Nireeksha S.} and Anup Poudel and Laurence Fitzhenry and Siobh{\'a}n Matthews and Walsh, {Philip R.} and Coffey, {Austin B.}",

note = "Funding Information: The authors wish to acknowledge the Institutes of Technology of Ireland (IOTI) Research Scholarship Programme, Science Foundation Ireland and Irish Research Council (Project ID: GOIPG/2016/1498) for financial assistance. Special thanks to the South Eastern Applied Materials Research Centre (SEAM), the Pharmaceutical and Molecular Biotechnology Research Centre (PMBRC) and the Convergent Technologies Research Group (CTRG) at Waterford Institute of Technology, Ireland for their support throughout the work. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

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doi = "10.1016/j.polymertesting.2017.07.006",

language = "English",

volume = "62",

pages = "268--277",

journal = "Polymer Testing",

issn = "0142-9418",

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AU - Karode, Nireeksha S.

AU - Poudel, Anup

AU - Fitzhenry, Laurence

AU - Matthews, Siobhán

AU - Walsh, Philip R.

AU - Coffey, Austin B.

N1 - Funding Information: The authors wish to acknowledge the Institutes of Technology of Ireland (IOTI) Research Scholarship Programme, Science Foundation Ireland and Irish Research Council (Project ID: GOIPG/2016/1498) for financial assistance. Special thanks to the South Eastern Applied Materials Research Centre (SEAM), the Pharmaceutical and Molecular Biotechnology Research Centre (PMBRC) and the Convergent Technologies Research Group (CTRG) at Waterford Institute of Technology, Ireland for their support throughout the work. Publisher Copyright: © 2017 Elsevier Ltd

PY - 2017/9

Y1 - 2017/9

N2 - The continuous structural changes of Poly(styrene-b-ethylene-butylene-b-styrene) [SEBS] due to the effect of temperature are hard to evaluate using conventional differential scanning calorimetry (DSC). This paper presents an accurate and simple way to evaluate microstructural and glass transitions of SEBS using modulated differential scanning calorimetry (MDSC). The weak crystalline nature of –(CH2-CH2)–n in the ethylene-butylene (EB) block melted around 36 °C. The premature molecular moment and Tg of the styrene block were at 62 °C and 96 °C, respectively. The interfacial region at high temperature was explained with respect to order-order transition (OOT) at 144 °C and a prominent Order-Disorder Transition (ODT) at around 202 °C. Dynamic mechanical thermal analysis (DMTA) and dynamic mechanical rheological testing (DMRT) measurements also revealed that the Tg of the PS transition were consistent at around 96 °C.

AB - The continuous structural changes of Poly(styrene-b-ethylene-butylene-b-styrene) [SEBS] due to the effect of temperature are hard to evaluate using conventional differential scanning calorimetry (DSC). This paper presents an accurate and simple way to evaluate microstructural and glass transitions of SEBS using modulated differential scanning calorimetry (MDSC). The weak crystalline nature of –(CH2-CH2)–n in the ethylene-butylene (EB) block melted around 36 °C. The premature molecular moment and Tg of the styrene block were at 62 °C and 96 °C, respectively. The interfacial region at high temperature was explained with respect to order-order transition (OOT) at 144 °C and a prominent Order-Disorder Transition (ODT) at around 202 °C. Dynamic mechanical thermal analysis (DMTA) and dynamic mechanical rheological testing (DMRT) measurements also revealed that the Tg of the PS transition were consistent at around 96 °C.

KW - Glass transition

KW - Non-reversing heat capacity

KW - Reversing heat capacity

KW - Tan delta

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DO - 10.1016/j.polymertesting.2017.07.006

M3 - Article

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EP - 277

JO - Polymer Testing

JF - Polymer Testing

SN - 0142-9418

ER -

Evaluation of interfacial region of microphase-separated SEBS using modulated differential scanning calorimetry and dynamic mechanical thermal analysis

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Keywords

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