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Title: Humidity-dependent compression-induced glass transition of the air–water interfacial Langmuir films of poly(D,L-lactic acid- ran-glycolic acid) (PLGA)

Abstract

Constant rate compression isotherms of the air–water interfacial Langmuir films of poly(D,L-lactic acid- ran-glycolic acid) (PLGA)show a distinct feature of an exponential increase in surface pressure in the high surface polymer concentration regime. We have previously demonstrated that this abrupt increase in surface pressure is linked to the glass transition of the polymer film, but the detailed mechanism of this process is not understood. In order to obtain a molecular-level understanding of this behavior, we performed extensive characterizations of the surface mechanical, structural and rheological properties of Langmuir PLGA films at the air–water interface, using combined experimental techniques including the Langmuir film balance, X-ray reflectivity and double-wall-ring interfacial rheometry methods.

Authors:
 [1];  [1];  [2];  [1];  [3];  [3];  [2];  [1]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Korea Univ., Seoul (Korea)
  3. Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
National Science Foundation (NSF)
OSTI Identifier:
1197045
Resource Type:
Journal Article
Journal Name:
Soft Matter
Additional Journal Information:
Journal Volume: 11; Journal Issue: 28; Journal ID: ISSN 1744-683X: SMOABF
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Kim, Hyun Chang, Lee, Hoyoung, Jung, Hyunjung, Choi, Yun -Hwa, Meron, Mati, Lin, Binhua, Bang, Joona, and Won, You -Yeon. Humidity-dependent compression-induced glass transition of the air–water interfacial Langmuir films of poly(D,L-lactic acid-ran-glycolic acid) (PLGA). United States: N. p., 2015. Web. doi:10.1039/C4SM02535K.
Kim, Hyun Chang, Lee, Hoyoung, Jung, Hyunjung, Choi, Yun -Hwa, Meron, Mati, Lin, Binhua, Bang, Joona, & Won, You -Yeon. Humidity-dependent compression-induced glass transition of the air–water interfacial Langmuir films of poly(D,L-lactic acid-ran-glycolic acid) (PLGA). United States. doi:10.1039/C4SM02535K.
Kim, Hyun Chang, Lee, Hoyoung, Jung, Hyunjung, Choi, Yun -Hwa, Meron, Mati, Lin, Binhua, Bang, Joona, and Won, You -Yeon. Wed . "Humidity-dependent compression-induced glass transition of the air–water interfacial Langmuir films of poly(D,L-lactic acid-ran-glycolic acid) (PLGA)". United States. doi:10.1039/C4SM02535K.
@article{osti_1197045,
title = {Humidity-dependent compression-induced glass transition of the air–water interfacial Langmuir films of poly(D,L-lactic acid-ran-glycolic acid) (PLGA)},
author = {Kim, Hyun Chang and Lee, Hoyoung and Jung, Hyunjung and Choi, Yun -Hwa and Meron, Mati and Lin, Binhua and Bang, Joona and Won, You -Yeon},
abstractNote = {Constant rate compression isotherms of the air–water interfacial Langmuir films of poly(D,L-lactic acid-ran-glycolic acid) (PLGA)show a distinct feature of an exponential increase in surface pressure in the high surface polymer concentration regime. We have previously demonstrated that this abrupt increase in surface pressure is linked to the glass transition of the polymer film, but the detailed mechanism of this process is not understood. In order to obtain a molecular-level understanding of this behavior, we performed extensive characterizations of the surface mechanical, structural and rheological properties of Langmuir PLGA films at the air–water interface, using combined experimental techniques including the Langmuir film balance, X-ray reflectivity and double-wall-ring interfacial rheometry methods.},
doi = {10.1039/C4SM02535K},
journal = {Soft Matter},
issn = {1744-683X: SMOABF},
number = 28,
volume = 11,
place = {United States},
year = {2015},
month = {8}
}