Closed-Loop Phase Behavior of Block Copolymers in the Presence of Competitive Hydrogen-Bonding and Coulombic Interaction

Rui Yang Wang; Jie Huang; Xiao Shuai Guo; Xiao Han Cao; Shu Fen Zou; Zai Zai Tong; Jun Ting Xu; Bin Yang Du; Zhi Qiang Fan

doi:10.1021/acs.macromol.8b00627

Closed-Loop Phase Behavior of Block Copolymers in the Presence of Competitive Hydrogen-Bonding and Coulombic Interaction

Rui Yang Wang
, Jie Huang
, Xiao Shuai Guo
, Xiao Han Cao
, Shu Fen Zou
, Zai Zai Tong
, Jun Ting Xu
, Bin Yang Du
, Zhi Qiang Fan

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

16 Scopus citations

Abstract

The closed-loop phase behavior, where a lower disorder-to-order transition (LDOT) takes place first, followed by an upper order-to-disorder transition (UODT) upon heating, is seldom observed in block copolymers (BCPs). In this work, we prepared a model BCP, LiClO₄-doped poly(ethylene oxide)-b-poly(tert-butyl acrylate-co-acrylic acid) (PEO-b-P(tBA-co-AA)), in which the hydrogen (H)-bonding between the PEO and AA units and the Coulombic interaction in salt-doped PEO block have opposite effects on the miscibility of BCPs. The relative strength of the H-bonding and Coulombic interaction can be easily tuned by the hydrolysis degree (D_H) of the PtBA block and the amount of doped salt. Various phase behaviors are observed by changing relative strength of different forces. Especially, the closed-loop phase behavior can be achieved when H-bonding, Coulombic interaction, and mixing entropy reach a delicate balance.

Original language	English
Pages (from-to)	4727-4734
Number of pages	8
Journal	Macromolecules
Volume	51
Issue number	12
DOIs	https://doi.org/10.1021/acs.macromol.8b00627
State	Published - 26 Jun 2018
Externally published	Yes

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@article{e5c0fbacc26f4467994e8c081e819ec3,

title = "Closed-Loop Phase Behavior of Block Copolymers in the Presence of Competitive Hydrogen-Bonding and Coulombic Interaction",

abstract = "The closed-loop phase behavior, where a lower disorder-to-order transition (LDOT) takes place first, followed by an upper order-to-disorder transition (UODT) upon heating, is seldom observed in block copolymers (BCPs). In this work, we prepared a model BCP, LiClO4-doped poly(ethylene oxide)-b-poly(tert-butyl acrylate-co-acrylic acid) (PEO-b-P(tBA-co-AA)), in which the hydrogen (H)-bonding between the PEO and AA units and the Coulombic interaction in salt-doped PEO block have opposite effects on the miscibility of BCPs. The relative strength of the H-bonding and Coulombic interaction can be easily tuned by the hydrolysis degree (DH) of the PtBA block and the amount of doped salt. Various phase behaviors are observed by changing relative strength of different forces. Especially, the closed-loop phase behavior can be achieved when H-bonding, Coulombic interaction, and mixing entropy reach a delicate balance.",

author = "Wang, \{Rui Yang\} and Jie Huang and Guo, \{Xiao Shuai\} and Cao, \{Xiao Han\} and Zou, \{Shu Fen\} and Tong, \{Zai Zai\} and Xu, \{Jun Ting\} and Du, \{Bin Yang\} and Fan, \{Zhi Qiang\}",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = jun,

day = "26",

doi = "10.1021/acs.macromol.8b00627",

language = "英语",

volume = "51",

pages = "4727--4734",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Closed-Loop Phase Behavior of Block Copolymers in the Presence of Competitive Hydrogen-Bonding and Coulombic Interaction

AU - Wang, Rui Yang

AU - Huang, Jie

AU - Guo, Xiao Shuai

AU - Cao, Xiao Han

AU - Zou, Shu Fen

AU - Tong, Zai Zai

AU - Xu, Jun Ting

AU - Du, Bin Yang

AU - Fan, Zhi Qiang

PY - 2018/6/26

Y1 - 2018/6/26

N2 - The closed-loop phase behavior, where a lower disorder-to-order transition (LDOT) takes place first, followed by an upper order-to-disorder transition (UODT) upon heating, is seldom observed in block copolymers (BCPs). In this work, we prepared a model BCP, LiClO4-doped poly(ethylene oxide)-b-poly(tert-butyl acrylate-co-acrylic acid) (PEO-b-P(tBA-co-AA)), in which the hydrogen (H)-bonding between the PEO and AA units and the Coulombic interaction in salt-doped PEO block have opposite effects on the miscibility of BCPs. The relative strength of the H-bonding and Coulombic interaction can be easily tuned by the hydrolysis degree (DH) of the PtBA block and the amount of doped salt. Various phase behaviors are observed by changing relative strength of different forces. Especially, the closed-loop phase behavior can be achieved when H-bonding, Coulombic interaction, and mixing entropy reach a delicate balance.

AB - The closed-loop phase behavior, where a lower disorder-to-order transition (LDOT) takes place first, followed by an upper order-to-disorder transition (UODT) upon heating, is seldom observed in block copolymers (BCPs). In this work, we prepared a model BCP, LiClO4-doped poly(ethylene oxide)-b-poly(tert-butyl acrylate-co-acrylic acid) (PEO-b-P(tBA-co-AA)), in which the hydrogen (H)-bonding between the PEO and AA units and the Coulombic interaction in salt-doped PEO block have opposite effects on the miscibility of BCPs. The relative strength of the H-bonding and Coulombic interaction can be easily tuned by the hydrolysis degree (DH) of the PtBA block and the amount of doped salt. Various phase behaviors are observed by changing relative strength of different forces. Especially, the closed-loop phase behavior can be achieved when H-bonding, Coulombic interaction, and mixing entropy reach a delicate balance.

UR - https://www.scopus.com/pages/publications/85049012131

U2 - 10.1021/acs.macromol.8b00627

DO - 10.1021/acs.macromol.8b00627

M3 - 文章

AN - SCOPUS:85049012131

SN - 0024-9297

VL - 51

SP - 4727

EP - 4734

JO - Macromolecules

JF - Macromolecules

IS - 12

ER -

Closed-Loop Phase Behavior of Block Copolymers in the Presence of Competitive Hydrogen-Bonding and Coulombic Interaction

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