PMID- 16197638
OWN - NLM
STAT- MEDLINE
DCOM- 20051101
LR  - 20131121
IS  - 0003-7028 (Print)
IS  - 0003-7028 (Linking)
VI  - 59
IP  - 9
DP  - 2005 Sep
TI  - Stress-induced crystal-to-crystal transformations in high-density 
      polyethylene-layered silicate nano-composites: a spectroscopic study.
PG  - 1148-54
AB  - High-density polyethylene (HDPE)-clay nano-composites have been prepared using 
      the melt intercalation technique. Organically modified montmorillonite at various 
      loadings (0.5--7%) was used as a nano-additive. Fourier transform infrared 
      spectroscopy (FT-IR) was utilized for the first time to monitor the 
      stress-induced crystal-to-crystal transformations of the polyethylene matrix with 
      respect to the clay loading as well as to the degree of mechanical strain. In 
      addition, polarized infrared measurements revealed information on both the 
      orientation and the stress-induced distortion of the crystals. It was concluded 
      that the crystal-to-crystal transformations are hindered by the presence of the 
      clay, which also prevented the crystals from orienting even at low clay loadings 
      (1%). Finally, X-ray diffraction (XRD) and differential scanning calorimetry 
      (DSC) measurements confirmed the presence of the stress-induced crystalline 
      structures in agreement with the infrared measurements.
FAU - Tzavalas, Spiros
AU  - Tzavalas S
AD  - Foundation for Research & Technology-Hellas, Institute of Chemical Engineering 
      and High Temperature Processes (FORTH/ ICE-HT), Patras, 26504 Greece.
FAU - Gregoriou, Vasilis G
AU  - Gregoriou VG
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Appl Spectrosc
JT  - Applied spectroscopy
JID - 0372406
RN  - 0 (Proteins)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Hydrogen Bonding
MH  - *Protein Structure, Secondary
MH  - Proteins/chemistry
MH  - Spectroscopy, Fourier Transform Infrared/*methods
MH  - Temperature
MH  - Water/*chemistry
EDAT- 2005/10/04 09:00
MHDA- 2005/11/03 09:00
CRDT- 2005/10/04 09:00
PHST- 2005/10/04 09:00 [pubmed]
PHST- 2005/11/03 09:00 [medline]
PHST- 2005/10/04 09:00 [entrez]
AID - 10.1366/0003702055012519 [doi]
PST - ppublish
SO  - Appl Spectrosc. 2005 Sep;59(9):1148-54. doi: 10.1366/0003702055012519.