PMID- 26601359
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20151229
LR  - 20151125
IS  - 1000-0593 (Print)
IS  - 1000-0593 (Linking)
VI  - 35
IP  - 6
DP  - 2015 Jun
TI  - [Attenuated Total Reflection Infrared Spectroscopy for Degradation Profile of 
      High Density Polyethylene after Weathering Aging].
PG  - 1520-4
AB  - High density polyethylene (HDPE) was widely used as rotational packaging case in 
      the material reserve field. The chemical changes of HDPE, exposed to particular 
      climatic conditions of tropic marine atmosphere for one year-long in Wanning 
      Hainan, were elucidated by the attenuated total reflection infrared spectroscopy 
      (ATR-FTIR). The structural changes were studied qualitatively, mainly from the 
      polymeric chain breaking, branching and oxidation to distinguish the degradation 
      profile. The variations of crystallinity & carbonyl index were also studied 
      quantitatively according to the characteristic peaks intensity & area ratio. 
      Finally, the relationships between structural changes and mechanical properties 
      were investigated. The results showed that the polymeric chain breaking & 
      branching play a leading role before 3 months in the aging progress. Then 
      oxidation phenomena gradually takes place during 3-6 months. The chain branching 
      & oxidation were predominant factors after 6 months. Nine months later, the 
      oxidation was saturated gradually. Furthermore, the aging process is positively 
      correlated to the temperature and irradiation. After 12 months aging, the 
      carbonyl index increased by 112 times and crystallinity was 10% higher than 
      before. The tensile/bending modulus deceased faster than tensile/bending strength 
      of HDPE. The linear degree of tensile modulus and carbonyl index was 0.97. The 
      degree of linearity of tensile strength and crystallinity calculated by feature 
      bands (720-730 cm(-1)) was 0.96. It showed that the mechanical properties of HDPE 
      can be speculated from the structural changes by ATR-FTIR.
FAU - Guo, Jun-jun
AU  - Guo JJ
FAU - Yan, Hua
AU  - Yan H
FAU - Bao, He-bin
AU  - Bao HB
FAU - Wang, Xue-mei
AU  - Wang XM
FAU - Hu, Zhi-de
AU  - Hu ZD
FAU - Yang, Jian-jian
AU  - Yang JJ
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Guang Pu Xue Yu Guang Pu Fen Xi
JT  - Guang pu xue yu guang pu fen xi = Guang pu
JID - 9424805
EDAT- 2015/11/26 06:00
MHDA- 2015/11/26 06:01
CRDT- 2015/11/26 06:00
PHST- 2015/11/26 06:00 [entrez]
PHST- 2015/11/26 06:00 [pubmed]
PHST- 2015/11/26 06:01 [medline]
PST - ppublish
SO  - Guang Pu Xue Yu Guang Pu Fen Xi. 2015 Jun;35(6):1520-4.