Self-assembly and thermal behavior of amphiphilic di-block copolymers of poly(methyl methacrylate)-block-poly(ethylene oxide) (PMMA-b-PEO)

null Imad-Ud-Din; Zia Ur Rehman; Mohsan Nawaz; Ali Bahader; Rukhsana Bibi; Imad Uddin; Qudrat Ullah Khan; Gareth James Price; Tariq Bashir

doi:10.1007/s00289-022-04148-8

Self-assembly and thermal behavior of amphiphilic di-block copolymers of poly(methyl methacrylate)-block-poly(ethylene oxide) (PMMA-b-PEO)

Imad-Ud-Din, Zia Ur Rehman, Mohsan Nawaz, Ali Bahader, Rukhsana Bibi, Imad Uddin, Qudrat Ullah Khan, Gareth James Price, Tariq Bashir

Department of Chemistry

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

Abstract

Two amphiphilic di-block copolymers with composition of PMMA₁₁₈-b-PEO₄₅ and PMMA₂₅-b-PEO₄₅ have been synthesized and characterized by NMR and FTIR spectroscopies. The critical micelle concentration (CMC) of synthesized copolymers in toluene has been determined. The variation in CMC of both polymers was recorded under the influence of temperature. Interestingly, it was found that CMC decreases with increase in the polymethyl methacrylate (PMMA) chain length and increase in temperature. A decrease in Gibbs free of micellization (ΔG_mic) energy was found in the range of (− 17.3 to − 20.4), and increase in the entropy of micellization was observed in the range of (26.4 to 29.4) mol⁻¹ at temperature in the range from 293 to 323 K with 10 K increment, while enthalpy is independent of temperature. From thermal analysis, it was concluded that degradation temperature slightly increases as the PMMA length increases. This is probably due to difficult diffusion of thermal energy across the entangled chains of PMMA.

Original language	English
Journal	Polymer Bulletin
Early online date	5 Mar 2022
DOIs	https://doi.org/10.1007/s00289-022-04148-8
Publication status	E-pub ahead of print - 5 Mar 2022

Keywords

Block copolymer
Micellization
Polymerization
Self-assembly
Synthesis

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Polymers and Plastics
Materials Chemistry

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10.1007/s00289-022-04148-8

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@article{896fe5dd2e3a416698c2b714ce7ad4fa,

title = "Self-assembly and thermal behavior of amphiphilic di-block copolymers of poly(methyl methacrylate)-block-poly(ethylene oxide) (PMMA-b-PEO)",

abstract = "Two amphiphilic di-block copolymers with composition of PMMA118-b-PEO45 and PMMA25-b-PEO45 have been synthesized and characterized by NMR and FTIR spectroscopies. The critical micelle concentration (CMC) of synthesized copolymers in toluene has been determined. The variation in CMC of both polymers was recorded under the influence of temperature. Interestingly, it was found that CMC decreases with increase in the polymethyl methacrylate (PMMA) chain length and increase in temperature. A decrease in Gibbs free of micellization (ΔGmic) energy was found in the range of (− 17.3 to − 20.4), and increase in the entropy of micellization was observed in the range of (26.4 to 29.4) mol−1 at temperature in the range from 293 to 323 K with 10 K increment, while enthalpy is independent of temperature. From thermal analysis, it was concluded that degradation temperature slightly increases as the PMMA length increases. This is probably due to difficult diffusion of thermal energy across the entangled chains of PMMA.",

keywords = "Block copolymer, Micellization, Polymerization, Self-assembly, Synthesis",

author = "Imad-Ud-Din and Rehman, {Zia Ur} and Mohsan Nawaz and Ali Bahader and Rukhsana Bibi and Imad Uddin and Khan, {Qudrat Ullah} and Price, {Gareth James} and Tariq Bashir",

note = "Funding Information: The authors are thankful to the Higher Education Commission of Pakistan for providing financial support. ",

year = "2022",

month = mar,

day = "5",

doi = "10.1007/s00289-022-04148-8",

language = "English",

journal = "Polymer Bulletin",

issn = "0170-0839",

publisher = "Springer Verlag",

}

TY - JOUR

T1 - Self-assembly and thermal behavior of amphiphilic di-block copolymers of poly(methyl methacrylate)-block-poly(ethylene oxide) (PMMA-b-PEO)

AU - Imad-Ud-Din, null

AU - Rehman, Zia Ur

AU - Nawaz, Mohsan

AU - Bahader, Ali

AU - Bibi, Rukhsana

AU - Uddin, Imad

AU - Khan, Qudrat Ullah

AU - Price, Gareth James

AU - Bashir, Tariq

N1 - Funding Information: The authors are thankful to the Higher Education Commission of Pakistan for providing financial support.

PY - 2022/3/5

Y1 - 2022/3/5

N2 - Two amphiphilic di-block copolymers with composition of PMMA118-b-PEO45 and PMMA25-b-PEO45 have been synthesized and characterized by NMR and FTIR spectroscopies. The critical micelle concentration (CMC) of synthesized copolymers in toluene has been determined. The variation in CMC of both polymers was recorded under the influence of temperature. Interestingly, it was found that CMC decreases with increase in the polymethyl methacrylate (PMMA) chain length and increase in temperature. A decrease in Gibbs free of micellization (ΔGmic) energy was found in the range of (− 17.3 to − 20.4), and increase in the entropy of micellization was observed in the range of (26.4 to 29.4) mol−1 at temperature in the range from 293 to 323 K with 10 K increment, while enthalpy is independent of temperature. From thermal analysis, it was concluded that degradation temperature slightly increases as the PMMA length increases. This is probably due to difficult diffusion of thermal energy across the entangled chains of PMMA.

AB - Two amphiphilic di-block copolymers with composition of PMMA118-b-PEO45 and PMMA25-b-PEO45 have been synthesized and characterized by NMR and FTIR spectroscopies. The critical micelle concentration (CMC) of synthesized copolymers in toluene has been determined. The variation in CMC of both polymers was recorded under the influence of temperature. Interestingly, it was found that CMC decreases with increase in the polymethyl methacrylate (PMMA) chain length and increase in temperature. A decrease in Gibbs free of micellization (ΔGmic) energy was found in the range of (− 17.3 to − 20.4), and increase in the entropy of micellization was observed in the range of (26.4 to 29.4) mol−1 at temperature in the range from 293 to 323 K with 10 K increment, while enthalpy is independent of temperature. From thermal analysis, it was concluded that degradation temperature slightly increases as the PMMA length increases. This is probably due to difficult diffusion of thermal energy across the entangled chains of PMMA.

KW - Block copolymer

KW - Micellization

KW - Polymerization

KW - Self-assembly

KW - Synthesis

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U2 - 10.1007/s00289-022-04148-8

DO - 10.1007/s00289-022-04148-8

M3 - Article

AN - SCOPUS:85125678417

JO - Polymer Bulletin

JF - Polymer Bulletin

SN - 0170-0839

ER -

Self-assembly and thermal behavior of amphiphilic di-block copolymers of poly(methyl methacrylate)-block-poly(ethylene oxide) (PMMA-b-PEO)

Abstract

Keywords

ASJC Scopus subject areas

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