Novel moisture-sensitive shape memory polyurethanes containing pyridine moieties

Shaojun Chen; Jinlian Hu; Chun-wah Yuen; Laikuen Chan

doi:10.1016/j.polymer.2009.07.031

Novel moisture-sensitive shape memory polyurethanes containing pyridine moieties

Shaojun Chen
, Jinlian Hu^*
, Chun-wah Yuen
, Laikuen Chan

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

140 Citations (Scopus)

Abstract

In this communication, novel moisture-sensitive shape memory polyurethane (SMPU) was synthesized from 1,6-hexamethylene diisocyanate (HDI) and N,N-bis(2-hydroxylethyl) isonicotinamide (BINA) and 1,4-butanediol (BDO). Results show that the BINA based SMPUs have excellent moisture absorption properties which are not only influenced by the temperature, but also by the relative humidity (RH). As a result, high strain recovery with fast recovery speed is obtained after immersion in the moisture condition for a short time. FT-IR spectra provide a proof to the mechanism of moisture-sensitive SME which is based on the dissociation or disrupt of hydrogen bonding in the pyridine ring induced by moisture absorption. Thus, the strain recovery is achieved in the moisture-sensitive SMPUs by decreasing the glass transition temperature (T_g) below ambient temperature without external heating. © 2009 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	4424-4428
Journal	Polymer
Volume	50
Issue number	19
Online published	24 Jul 2009
DOIs	https://doi.org/10.1016/j.polymer.2009.07.031
Publication status	Published - 10 Sept 2009
Externally published	Yes

Research Keywords

Polymer
Shape memory
Supramolecular structure

Access Output

10.1016/j.polymer.2009.07.031

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{115869df8d3f4d4ba69cd4bfa9ada968,

title = "Novel moisture-sensitive shape memory polyurethanes containing pyridine moieties",

abstract = "In this communication, novel moisture-sensitive shape memory polyurethane (SMPU) was synthesized from 1,6-hexamethylene diisocyanate (HDI) and N,N-bis(2-hydroxylethyl) isonicotinamide (BINA) and 1,4-butanediol (BDO). Results show that the BINA based SMPUs have excellent moisture absorption properties which are not only influenced by the temperature, but also by the relative humidity (RH). As a result, high strain recovery with fast recovery speed is obtained after immersion in the moisture condition for a short time. FT-IR spectra provide a proof to the mechanism of moisture-sensitive SME which is based on the dissociation or disrupt of hydrogen bonding in the pyridine ring induced by moisture absorption. Thus, the strain recovery is achieved in the moisture-sensitive SMPUs by decreasing the glass transition temperature (Tg) below ambient temperature without external heating. {\textcopyright} 2009 Elsevier Ltd. All rights reserved.",

keywords = "Polymer, Shape memory, Supramolecular structure",

author = "Shaojun Chen and Jinlian Hu and Chun-wah Yuen and Laikuen Chan",

year = "2009",

month = sep,

day = "10",

doi = "10.1016/j.polymer.2009.07.031",

language = "English",

volume = "50",

pages = "4424--4428",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier B.V.",

number = "19",

}

TY - JOUR

T1 - Novel moisture-sensitive shape memory polyurethanes containing pyridine moieties

AU - Chen, Shaojun

AU - Hu, Jinlian

AU - Yuen, Chun-wah

AU - Chan, Laikuen

PY - 2009/9/10

Y1 - 2009/9/10

N2 - In this communication, novel moisture-sensitive shape memory polyurethane (SMPU) was synthesized from 1,6-hexamethylene diisocyanate (HDI) and N,N-bis(2-hydroxylethyl) isonicotinamide (BINA) and 1,4-butanediol (BDO). Results show that the BINA based SMPUs have excellent moisture absorption properties which are not only influenced by the temperature, but also by the relative humidity (RH). As a result, high strain recovery with fast recovery speed is obtained after immersion in the moisture condition for a short time. FT-IR spectra provide a proof to the mechanism of moisture-sensitive SME which is based on the dissociation or disrupt of hydrogen bonding in the pyridine ring induced by moisture absorption. Thus, the strain recovery is achieved in the moisture-sensitive SMPUs by decreasing the glass transition temperature (Tg) below ambient temperature without external heating. © 2009 Elsevier Ltd. All rights reserved.

AB - In this communication, novel moisture-sensitive shape memory polyurethane (SMPU) was synthesized from 1,6-hexamethylene diisocyanate (HDI) and N,N-bis(2-hydroxylethyl) isonicotinamide (BINA) and 1,4-butanediol (BDO). Results show that the BINA based SMPUs have excellent moisture absorption properties which are not only influenced by the temperature, but also by the relative humidity (RH). As a result, high strain recovery with fast recovery speed is obtained after immersion in the moisture condition for a short time. FT-IR spectra provide a proof to the mechanism of moisture-sensitive SME which is based on the dissociation or disrupt of hydrogen bonding in the pyridine ring induced by moisture absorption. Thus, the strain recovery is achieved in the moisture-sensitive SMPUs by decreasing the glass transition temperature (Tg) below ambient temperature without external heating. © 2009 Elsevier Ltd. All rights reserved.

KW - Polymer

KW - Shape memory

KW - Supramolecular structure

UR - https://www.scopus.com/pages/publications/69249106553

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-69249106553&origin=recordpage

U2 - 10.1016/j.polymer.2009.07.031

DO - 10.1016/j.polymer.2009.07.031

M3 - RGC 21 - Publication in refereed journal

SN - 0032-3861

VL - 50

SP - 4424

EP - 4428

JO - Polymer

JF - Polymer

IS - 19

ER -

Novel moisture-sensitive shape memory polyurethanes containing pyridine moieties

Abstract

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this