PMID- 31807122
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 1385-772X (Print)
IS  - 1568-5551 (Electronic)
IS  - 1385-772X (Linking)
VI  - 22
IP  - 1
DP  - 2019
TI  - Role of sequence of feeding on the properties of polyurethane nanocomposite 
      containing halloysite nanotubes.
PG  - 199-212
LID - 10.1080/15685551.2019.1687083 [doi]
AB  - Polyurethane/Halloysite Nantubes nanocomposites containing 1 wt.% nanoparticles 
      were prepared using in situ polymerization method with different mixing 
      sequences. Various experiments have been performed in order to evaluate the 
      effect of nanoparticle dispersion and the different orders of mixing of the 
      samples on the mechanical properties and morphology of nanocomposites. The 
      results obtained from the ATR-FTIR test demonstrated that the presence of 
      nanoparticles led to an increase in phase separation, and the sample with the 
      best nanoparticle dispersion has shown more phase separation than the other 
      samples. Furthermore, the results of the Differential scanning calorimetry (DSC) 
      also confirmed more phase separation and the crystallinity of the samples in the 
      presence of nanoparticles. Scanning electron microscope (SEM) images were 
      utilized in order to investigate the dispersion of nanoparticles in polyurethane 
      matrix and to examine surface fracture of the samples. Moreover, differential 
      mechanical thermal analysis (DMTA) revealed that the presence of nanoparticles 
      has altered the glass transition temperature of polymers, and there are physical 
      and chemical interaction and hydrogen bonding between nanoparticles and hard and 
      soft polyurethane segments. In addition, in the presence of nanoparticles the 
      damping of the samples was reduced compared to the neat sample. Change in 
      behavior from liquid like to solid like in the range of low angular frequencies 
      was observed which is in agreement with the formation of a network structure that 
      can be broken even at low shear rates. In the second step, kinetics of the phase 
      separation process of thermoplastic polyurethane and nanocomposites was studied 
      by rheological experiments. The results showed that the kinetics of phase 
      separation process of thermoplastic polyurethane is similar to that of the 
      crystallization process. Phase separation kinetics of neat samples and 
      nanocomposite have been studied. The presence of nanoparticles by nucleation 
      mechanism increased the rate of the phase separation.
CI  - (c) 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & 
      Francis Group.
FAU - Oliaie, Hadi
AU  - Oliaie H
AD  - Department of Polymer Engineering and Color Technology, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
FAU - Haddadi-Asl, Vahid
AU  - Haddadi-Asl V
AD  - Department of Polymer Engineering and Color Technology, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
FAU - Masoud Mirhosseini, Mohammad
AU  - Masoud Mirhosseini M
AD  - Department of Polymer Engineering and Color Technology, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
FAU - Sahebi Jouibari, Iman
AU  - Sahebi Jouibari I
AD  - Department of Polymer Engineering and Color Technology, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
FAU - Mohebi, Sara
AU  - Mohebi S
AD  - Department of Polymer Engineering and Color Technology, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
FAU - Shams, Arash
AU  - Shams A
AD  - Department of Polymer Engineering and Color Technology, Amirkabir University of 
      Technology (Tehran Polytechnic), Tehran, Iran.
LA  - eng
PT  - Journal Article
DEP - 20191122
PL  - England
TA  - Des Monomers Polym
JT  - Designed monomers and polymers
JID - 101239706
PMC - PMC6882454
OTO - NOTNLM
OT  - Thermoplastic polyurethane
OT  - halloysite nanotube
OT  - in-situ polymerization
OT  - phase separation
EDAT- 2019/12/07 06:00
MHDA- 2019/12/07 06:01
PMCR- 2019/11/22
CRDT- 2019/12/07 06:00
PHST- 2019/07/22 00:00 [received]
PHST- 2019/10/27 00:00 [accepted]
PHST- 2019/12/07 06:00 [entrez]
PHST- 2019/12/07 06:00 [pubmed]
PHST- 2019/12/07 06:01 [medline]
PHST- 2019/11/22 00:00 [pmc-release]
AID - 1687083 [pii]
AID - 10.1080/15685551.2019.1687083 [doi]
PST - epublish
SO  - Des Monomers Polym. 2019 Nov 22;22(1):199-212. doi: 
      10.1080/15685551.2019.1687083. eCollection 2019.