Cargando…

Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS

Pluronic F127 exhibits thermogelling behaviour at 20–30 °C via a micelle packing mechanism. Disruption of the micelle packing increases the sol-gel temperature, but results in the decrease of modulus. Herein, we reported a method to modify F127 with polyhedral oligosilsesquioxane (POSS) to impart a...

Descripción completa

Detalles Bibliográficos
Autores principales: Dou, Qingqing, Abdul Karim, Anis, Loh, Xian Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432308/
https://www.ncbi.nlm.nih.gov/pubmed/30974616
http://dx.doi.org/10.3390/polym8090341
_version_ 1783406105273040896
author Dou, Qingqing
Abdul Karim, Anis
Loh, Xian Jun
author_facet Dou, Qingqing
Abdul Karim, Anis
Loh, Xian Jun
author_sort Dou, Qingqing
collection PubMed
description Pluronic F127 exhibits thermogelling behaviour at 20–30 °C via a micelle packing mechanism. Disruption of the micelle packing increases the sol-gel temperature, but results in the decrease of modulus. Herein, we reported a method to modify F127 with polyhedral oligosilsesquioxane (POSS) to impart a higher gelling temperature without yielding the property and strength of the thermogel. The thermal degradation temperature was enhanced to 15 °C after POSS incorporation and the gelling temperature shifted 10 °C higher, without sacrificing the modulus of the gel. Rheological studies supported the claim that the gel property was reinforced after POSS incorporation. F127-POSS copolymer matrix stored more energy from POSS reinforcement, which saw larger Lissajous curve areas before the collapse of the microstructure for the same amount of stress applied. These results indicated that modification with POSS would raise the sol-gel transition temperature without sacrificing the modulus of the gel.
format Online
Article
Text
id pubmed-6432308
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64323082019-04-02 Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS Dou, Qingqing Abdul Karim, Anis Loh, Xian Jun Polymers (Basel) Article Pluronic F127 exhibits thermogelling behaviour at 20–30 °C via a micelle packing mechanism. Disruption of the micelle packing increases the sol-gel temperature, but results in the decrease of modulus. Herein, we reported a method to modify F127 with polyhedral oligosilsesquioxane (POSS) to impart a higher gelling temperature without yielding the property and strength of the thermogel. The thermal degradation temperature was enhanced to 15 °C after POSS incorporation and the gelling temperature shifted 10 °C higher, without sacrificing the modulus of the gel. Rheological studies supported the claim that the gel property was reinforced after POSS incorporation. F127-POSS copolymer matrix stored more energy from POSS reinforcement, which saw larger Lissajous curve areas before the collapse of the microstructure for the same amount of stress applied. These results indicated that modification with POSS would raise the sol-gel transition temperature without sacrificing the modulus of the gel. MDPI 2016-09-15 /pmc/articles/PMC6432308/ /pubmed/30974616 http://dx.doi.org/10.3390/polym8090341 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dou, Qingqing
Abdul Karim, Anis
Loh, Xian Jun
Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS
title Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS
title_full Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS
title_fullStr Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS
title_full_unstemmed Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS
title_short Modification of Thermal and Mechanical Properties of PEG-PPG-PEG Copolymer (F127) with MA-POSS
title_sort modification of thermal and mechanical properties of peg-ppg-peg copolymer (f127) with ma-poss
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6432308/
https://www.ncbi.nlm.nih.gov/pubmed/30974616
http://dx.doi.org/10.3390/polym8090341
work_keys_str_mv AT douqingqing modificationofthermalandmechanicalpropertiesofpegppgpegcopolymerf127withmaposs
AT abdulkarimanis modificationofthermalandmechanicalpropertiesofpegppgpegcopolymerf127withmaposs
AT lohxianjun modificationofthermalandmechanicalpropertiesofpegppgpegcopolymerf127withmaposs