PMID- 33187228
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201201
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 12
IP  - 11
DP  - 2020 Nov 11
TI  - Dielectric Elastomers UV-Cured from Poly(dimethylsiloxane) Solution in Vinyl 
      Acetate.
LID - 10.3390/polym12112660 [doi]
LID - 2660
AB  - Poly(dimethylsiloxane) (PDMS) has been extensively used as an electroactive 
      polymer material because it exhibits not only excellent moldability but also 
      mechanical properties sufficient enough for electroactive performance despite low 
      dielectric permittivity. Its low dielectric property is due to its molecular 
      non-polarity. Here, we introduce a polar group into a PDMS elastomer by using 
      vinyl acetate (VAc) as a crosslinker to improve the dielectric permittivity. We 
      synthesized a high-molecular weight PDMS copolymer containing vinyl groups, 
      namely poly(dimethylsiloxane-co-methylvinylsiloxane) (VPDMS), and prepared 
      several of the VPDMS solutions in VAc. We obtained transparent PDMS films by UV 
      curing of the solution layers. Electromechanical actuation-related physical 
      properties of one of the UV-cured films were almost equivalent to or superior to 
      those of platinum-catalyzed hydrosilylation-cured PDMS films. In addition, 
      saponification of the UV-cured film significantly improved the electrical and 
      mechanical properties (varepsilon' ~ 44.1 pF/m at 10 kHz, E ~ 350 kPa, varepsilon ~ 320%). The 
      chemical introduction of VAc into PDMS main chains followed by saponification 
      would offer an efficacious method of enhancing the electroactive properties of 
      PDMS elastomers.
FAU - Park, Seung Koo
AU  - Park SK
AUID- ORCID: 0000-0002-9222-2262
AD  - Human Enhancement & Assistive Technology Research Section, Electronics and 
      Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 34129, 
      Korea.
FAU - Choi, Meejeong
AU  - Choi M
AD  - Human Enhancement & Assistive Technology Research Section, Electronics and 
      Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 34129, 
      Korea.
FAU - Kim, Dong Wook
AU  - Kim DW
AUID- ORCID: 0000-0002-0752-5366
AD  - Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 
      Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea.
FAU - Park, Bong Je
AU  - Park BJ
AD  - Human Enhancement & Assistive Technology Research Section, Electronics and 
      Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 34129, 
      Korea.
FAU - Shin, Eun Jin
AU  - Shin EJ
AD  - Human Enhancement & Assistive Technology Research Section, Electronics and 
      Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 34129, 
      Korea.
FAU - Park, Suntak
AU  - Park S
AUID- ORCID: 0000-0003-0804-2021
AD  - Human Enhancement & Assistive Technology Research Section, Electronics and 
      Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 34129, 
      Korea.
FAU - Yun, Sungryul
AU  - Yun S
AUID- ORCID: 0000-0002-4009-8933
AD  - Human Enhancement & Assistive Technology Research Section, Electronics and 
      Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 34129, 
      Korea.
LA  - eng
PT  - Journal Article
DEP - 20201111
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC7697987
OTO - NOTNLM
OT  - elastomer
OT  - permittivity
OT  - photocuring
OT  - poly(dimethylsiloxane)
OT  - saponification
OT  - vinyl acetate
COIS- The authors declare no conflict of interest.
EDAT- 2020/11/15 06:00
MHDA- 2020/11/15 06:01
PMCR- 2020/11/11
CRDT- 2020/11/14 01:03
PHST- 2020/10/20 00:00 [received]
PHST- 2020/11/04 00:00 [revised]
PHST- 2020/11/05 00:00 [accepted]
PHST- 2020/11/14 01:03 [entrez]
PHST- 2020/11/15 06:00 [pubmed]
PHST- 2020/11/15 06:01 [medline]
PHST- 2020/11/11 00:00 [pmc-release]
AID - polym12112660 [pii]
AID - polymers-12-02660 [pii]
AID - 10.3390/polym12112660 [doi]
PST - epublish
SO  - Polymers (Basel). 2020 Nov 11;12(11):2660. doi: 10.3390/polym12112660.