1D Hypo-Crystals of Stereo-Irregular PMMA via Spray-Induced Rapid Solidification of Aqueous Solutions

Sim, Jae Hyun; Kwon, Yejin; Eom, Sangwon; Hwang, Myoungsoon; Park, Soyoung; Choi, Hyorin; Chung, Hoeil; Sohn, Daewon; Kang, Youngjong

doi:10.1021/acs.macromol.1c02304

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1D Hypo-Crystals of Stereo-Irregular PMMA via Spray-Induced Rapid Solidification of Aqueous Solutions

Sim, Jae Hyun;
Kwon, Yejin;
Eom, Sangwon;
Hwang, Myoungsoon;
Park, Soyoung;
... Chung, Hoeil;
... Sohn, Daewon;
... Kang, Youngjong;
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초록

Synergistic solubility enhancement of poly(methyl methacrylate) (PMMA) in ethanol/water mixtures is observed in the presence of benzoic acid (BA). SAXS and 2D correlation Raman experiments show that PMMA chains strongly interact with BA molecules in PMMA/BA/ethanol/water quaternary solutions via hydrogen bonding and dispersion interactions, which leads to the spontaneous extension of PMMA chains. Stereo-irregular alpha-PMMAs are crystallized by spray-induced rapid solidification process of PMMA/BA/ethanol/water solutions. The resulting films consisting of microfibrils present clear melting transitions at similar to 290 degrees C in DSC thermograms and in-plane diffraction patterns in grazing-incidence X-ray diffraction.

키워드

BENZOIC-ACID; SOLUBILITY; SCATTERING; ETHANOL; EVAPORATION; SAXS

제목: 1D Hypo-Crystals of Stereo-Irregular PMMA via Spray-Induced Rapid Solidification of Aqueous Solutions

저자: Sim, Jae Hyun; Kwon, Yejin; Eom, Sangwon; Hwang, Myoungsoon; Park, Soyoung; Choi, Hyorin; Chung, Hoeil; Sohn, Daewon; Kang, Youngjong

DOI: 10.1021/acs.macromol.1c02304

발행일: 2022-03

유형: Article

저널명: Macromolecules

권: 55

호: 5

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