PMID- 31085996
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 11
IP  - 5
DP  - 2019 May 13
TI  - Semi-Interpenetrating Polymer Networks Based on Cyanate Ester and Highly Soluble 
      Thermoplastic Polyimide.
LID - 10.3390/polym11050862 [doi]
LID - 862
AB  - Thermoplastic polyimide (TPI) was synthesized via a traditional one-step method 
      using 2,3,3',4'-biphenyltetracarboxylic dianhydride (3,4'-BPDA), 
      4,4'-oxydianiline (4,4'-ODA), and 2,2'-bis(trifluoromethyl)benzidine (TFMB) as 
      the monomers. A series of semi-interpenetrating polymer networks (semi-IPNs) were 
      produced by dissolving TPI in bisphenol A dicyanate (BADCy), followed by curing 
      at elevated temperatures. The curing reactions of BADCy were accelerated by TPI 
      in the blends, reflected by lower curing temperatures and shorter gelation time 
      determined by differential scanning calorimetry (DSC) and rheological 
      measurements. As evidenced by scanning electron microscopy (SEM) images, phase 
      separation occurred and continuous TPI phases were formed in semi-IPNs with a TPI 
      content of 15% and 20%. The properties of semi-IPNs were systematically 
      investigated according to their glass transition temperatures (T(g)), 
      thermo-oxidative stability, and dielectric and mechanical properties. The results 
      revealed that these semi-IPNs possessed improved mechanical and dielectric 
      properties compared with pure polycyanurate. Notably, the impact strength of 
      semi-IPNs was 47%-320% greater than that of polycyanurate. Meanwhile, semi-IPNs 
      maintained comparable or even slightly higher thermal resistance in comparison 
      with polycyanurate. The favorable processability and material properties make 
      TPI/BADCy blends promising matrix resins for high-performance composites and 
      adhesives.
FAU - Liu, Jingfeng
AU  - Liu J
AD  - College of Chemical Engineering, Changchun University of Technology, Changchun 
      130012, China. austin@ciac.ac.cn.
AD  - Laboratory of Polymer Composites Engineering, Changchun Institute of Applied 
      Chemistry, Chinese Academy of Science, Changchun 130022, China. 
      austin@ciac.ac.cn.
FAU - Fan, Weifeng
AU  - Fan W
AD  - Laboratory of Polymer Composites Engineering, Changchun Institute of Applied 
      Chemistry, Chinese Academy of Science, Changchun 130022, China. fwf@ciac.ac.cn.
FAU - Lu, Gewu
AU  - Lu G
AD  - Aerospace Research Institute of Special Materials & Technology, Beijing 100074, 
      China. lugw03@126.com.
FAU - Zhou, Defeng
AU  - Zhou D
AD  - College of Chemical Engineering, Changchun University of Technology, Changchun 
      130012, China. defengzhou65@126.com.
FAU - Wang, Zhen
AU  - Wang Z
AD  - Laboratory of Polymer Composites Engineering, Changchun Institute of Applied 
      Chemistry, Chinese Academy of Science, Changchun 130022, China. wz@nimte.ac.cn.
AD  - Ningbo Institute of Material Technology & Engineering, Chinese Academy of 
      Science, Ningbo 315201, China. wz@nimte.ac.cn.
FAU - Yan, Jingling
AU  - Yan J
AD  - Laboratory of Polymer Composites Engineering, Changchun Institute of Applied 
      Chemistry, Chinese Academy of Science, Changchun 130022, China. jyan@nimte.ac.cn.
AD  - Ningbo Institute of Material Technology & Engineering, Chinese Academy of 
      Science, Ningbo 315201, China. jyan@nimte.ac.cn.
LA  - eng
GR  - CXJJ-17-M159/Technology Innovation Fund of Chinese Academy of Science/
PT  - Journal Article
DEP - 20190513
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC6572695
OTO - NOTNLM
OT  - cyanate ester
OT  - dielectric properties
OT  - semi-interpenetrating polymer network
OT  - thermoplastic polyimide
OT  - toughness
COIS- The authors declare no conflict of interests.
EDAT- 2019/05/16 06:00
MHDA- 2019/05/16 06:01
PMCR- 2019/05/13
CRDT- 2019/05/16 06:00
PHST- 2019/04/24 00:00 [received]
PHST- 2019/05/08 00:00 [revised]
PHST- 2019/05/10 00:00 [accepted]
PHST- 2019/05/16 06:00 [entrez]
PHST- 2019/05/16 06:00 [pubmed]
PHST- 2019/05/16 06:01 [medline]
PHST- 2019/05/13 00:00 [pmc-release]
AID - polym11050862 [pii]
AID - polymers-11-00862 [pii]
AID - 10.3390/polym11050862 [doi]
PST - epublish
SO  - Polymers (Basel). 2019 May 13;11(5):862. doi: 10.3390/polym11050862.