Thermosensitive lactitol-based polyether polyol (LPEP) hydrogels

Weiping Lin; Ming Hu; You Lo Hsieh; Mark J. Kurth; John M. Krochta

Thermosensitive lactitol-based polyether polyol (LPEP) hydrogels

Weiping Lin, Ming Hu, You Lo Hsieh, Mark J. Kurth, John M. Krochta

Chemistry

Research output: Contribution to journal › Article

14 Scopus citations

Abstract

A series of new thermosensitive polymer hydrogels were prepared by reacting acylated poly(ethylene glycol) bis(carboxymethyl) ether (PEGBCOCl) with lactitol-based polyether polyols (LPEP). The polyether polyols were generated from propoxylation of lactitol and have molecular weights ranging from 1337 to 4055 g/mol. The hydrogels absorb water up to 1000% of their dry weight and expel free water at temperatures at and above 30°C. The wide ranging swelling behavior and excellent thermosensitivity depend closely on the degree of crosslinking and the propylene oxide lengths in the polyols. Differential scanning calorimetry of the hydrogels showed two endotherms associated with the phase transitions of PO and EO segments in the hydrogel structures.

Original language	English (US)
Pages (from-to)	979-984
Number of pages	6
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	36
Issue number	6
State	Published - Apr 30 1998

Keywords

Hydrogel
Lactitol
PEO and PPO linkage
Polyether polyol
Swelling degree
Thermosensitivity

ASJC Scopus subject areas

Materials Chemistry
Polymers and Plastics

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Lin, W., Hu, M., Hsieh, Y. L., Kurth, M. J., & Krochta, J. M. (1998). Thermosensitive lactitol-based polyether polyol (LPEP) hydrogels. Journal of Polymer Science, Part A: Polymer Chemistry, 36(6), 979-984.

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abstract = "A series of new thermosensitive polymer hydrogels were prepared by reacting acylated poly(ethylene glycol) bis(carboxymethyl) ether (PEGBCOCl) with lactitol-based polyether polyols (LPEP). The polyether polyols were generated from propoxylation of lactitol and have molecular weights ranging from 1337 to 4055 g/mol. The hydrogels absorb water up to 1000% of their dry weight and expel free water at temperatures at and above 30°C. The wide ranging swelling behavior and excellent thermosensitivity depend closely on the degree of crosslinking and the propylene oxide lengths in the polyols. Differential scanning calorimetry of the hydrogels showed two endotherms associated with the phase transitions of PO and EO segments in the hydrogel structures.",

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AU - Lin, Weiping

AU - Hu, Ming

AU - Hsieh, You Lo

AU - Kurth, Mark J.

AU - Krochta, John M.

PY - 1998/4/30

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N2 - A series of new thermosensitive polymer hydrogels were prepared by reacting acylated poly(ethylene glycol) bis(carboxymethyl) ether (PEGBCOCl) with lactitol-based polyether polyols (LPEP). The polyether polyols were generated from propoxylation of lactitol and have molecular weights ranging from 1337 to 4055 g/mol. The hydrogels absorb water up to 1000% of their dry weight and expel free water at temperatures at and above 30°C. The wide ranging swelling behavior and excellent thermosensitivity depend closely on the degree of crosslinking and the propylene oxide lengths in the polyols. Differential scanning calorimetry of the hydrogels showed two endotherms associated with the phase transitions of PO and EO segments in the hydrogel structures.

AB - A series of new thermosensitive polymer hydrogels were prepared by reacting acylated poly(ethylene glycol) bis(carboxymethyl) ether (PEGBCOCl) with lactitol-based polyether polyols (LPEP). The polyether polyols were generated from propoxylation of lactitol and have molecular weights ranging from 1337 to 4055 g/mol. The hydrogels absorb water up to 1000% of their dry weight and expel free water at temperatures at and above 30°C. The wide ranging swelling behavior and excellent thermosensitivity depend closely on the degree of crosslinking and the propylene oxide lengths in the polyols. Differential scanning calorimetry of the hydrogels showed two endotherms associated with the phase transitions of PO and EO segments in the hydrogel structures.

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KW - Lactitol

KW - PEO and PPO linkage

KW - Polyether polyol

KW - Swelling degree

KW - Thermosensitivity

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