Abstract
Specific interactions, growth kinetics, and dendritic morphology in poly(ethylene succinate) (PESu) biodegradably modified with various contents of tannic acid (TA) were characterized using differential scanning analysis, Fourier-transform infrared (FTIR) spectroscopy, polarized-light optical microscopy, and atomic force microscopy. Strong interactions and highly retarded growth between PESu and a macromolecular ester with polyphenol groups, TA, interaction-induced highly retarded growth rates for the PESu/TA (80:20) composition are proven to lead to single-crystal-like dendrites when crystallized at high crystallization temperature (T c). At T c∈=∈70 °C, the growth rate for neat PESu is 12 μm/min while it is dramatically depressed to one tenth-fold at 1.5 μm/min with 20 wt.% TA in the blend. Strong specific interactions between the carbonyl group of polyesters and the phenolic hydroxyl group of TA are confirmed by (1) the blend's glass transition temperature (T g)-composition relationship exhibits a sigmoidal curve, well fitted by the Kwei T g model for miscible blends with large negative q∈=∈-90; (2) thermal analysis on crystal melting revealed an interaction parameter χ∈=∈-0.64 between PESu and TA; and (3) IR peak shifting analyzed using two-dimensional FTIR technique. A comparative blend of another polyester poly(hexamethylene sebacate) with TA, lacking the specific interactions, does not exhibit such single crystals upon similar melt crystallization. [Figure not available: see fulltext.]
| Original language | English |
|---|---|
| Pages (from-to) | 1563-1578 |
| Number of pages | 16 |
| Journal | Colloid and Polymer Science |
| Volume | 289 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2011 Sep 1 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Colloid and Surface Chemistry
- Materials Chemistry
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Phase behavior and crystal morphology in poly(ethylene succinate) biodegradably modified with tannin. / Nurkhamidah, Siti; Woo, Eamor; Huang, I. Han; Su, Chean C.
In: Colloid and Polymer Science, Vol. 289, No. 14, 01.09.2011, p. 1563-1578.Research output: Contribution to journal › Article
TY - JOUR
T1 - Phase behavior and crystal morphology in poly(ethylene succinate) biodegradably modified with tannin
AU - Nurkhamidah, Siti
AU - Woo, Eamor
AU - Huang, I. Han
AU - Su, Chean C.
PY - 2011/9/1
Y1 - 2011/9/1
N2 - Specific interactions, growth kinetics, and dendritic morphology in poly(ethylene succinate) (PESu) biodegradably modified with various contents of tannic acid (TA) were characterized using differential scanning analysis, Fourier-transform infrared (FTIR) spectroscopy, polarized-light optical microscopy, and atomic force microscopy. Strong interactions and highly retarded growth between PESu and a macromolecular ester with polyphenol groups, TA, interaction-induced highly retarded growth rates for the PESu/TA (80:20) composition are proven to lead to single-crystal-like dendrites when crystallized at high crystallization temperature (T c). At T c∈=∈70 °C, the growth rate for neat PESu is 12 μm/min while it is dramatically depressed to one tenth-fold at 1.5 μm/min with 20 wt.% TA in the blend. Strong specific interactions between the carbonyl group of polyesters and the phenolic hydroxyl group of TA are confirmed by (1) the blend's glass transition temperature (T g)-composition relationship exhibits a sigmoidal curve, well fitted by the Kwei T g model for miscible blends with large negative q∈=∈-90; (2) thermal analysis on crystal melting revealed an interaction parameter χ∈=∈-0.64 between PESu and TA; and (3) IR peak shifting analyzed using two-dimensional FTIR technique. A comparative blend of another polyester poly(hexamethylene sebacate) with TA, lacking the specific interactions, does not exhibit such single crystals upon similar melt crystallization. [Figure not available: see fulltext.]
AB - Specific interactions, growth kinetics, and dendritic morphology in poly(ethylene succinate) (PESu) biodegradably modified with various contents of tannic acid (TA) were characterized using differential scanning analysis, Fourier-transform infrared (FTIR) spectroscopy, polarized-light optical microscopy, and atomic force microscopy. Strong interactions and highly retarded growth between PESu and a macromolecular ester with polyphenol groups, TA, interaction-induced highly retarded growth rates for the PESu/TA (80:20) composition are proven to lead to single-crystal-like dendrites when crystallized at high crystallization temperature (T c). At T c∈=∈70 °C, the growth rate for neat PESu is 12 μm/min while it is dramatically depressed to one tenth-fold at 1.5 μm/min with 20 wt.% TA in the blend. Strong specific interactions between the carbonyl group of polyesters and the phenolic hydroxyl group of TA are confirmed by (1) the blend's glass transition temperature (T g)-composition relationship exhibits a sigmoidal curve, well fitted by the Kwei T g model for miscible blends with large negative q∈=∈-90; (2) thermal analysis on crystal melting revealed an interaction parameter χ∈=∈-0.64 between PESu and TA; and (3) IR peak shifting analyzed using two-dimensional FTIR technique. A comparative blend of another polyester poly(hexamethylene sebacate) with TA, lacking the specific interactions, does not exhibit such single crystals upon similar melt crystallization. [Figure not available: see fulltext.]
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U2 - 10.1007/s00396-011-2479-8
DO - 10.1007/s00396-011-2479-8
M3 - Article
VL - 289
SP - 1563
EP - 1578
JO - Colloid and Polymer Science
JF - Colloid and Polymer Science
SN - 0303-402X
IS - 14
ER -