PMID- 33086642
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201110
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 12
IP  - 10
DP  - 2020 Oct 19
TI  - Enhanced Heat Resistance of Acrylic Pressure-Sensitive Adhesive by Incorporating 
      Silicone Blocks Using Silicone-Based Macro-Azo-Initiator.
LID - 10.3390/polym12102410 [doi]
LID - 2410
AB  - To improve the heat resistance of acrylic-based pressure-sensitive adhesive 
      (PSA), silicone-block-containing acrylic PSAs (SPSAs) were synthesized using a 
      polydimethylsiloxane (PDMS)-based macro-azo-initiator (MAI). To evaluate the heat 
      resistance of the PSA films, the probe tack and 90 degrees  peel strength were measured 
      at different temperatures. The acrylic PSA showed that its tack curves changed 
      from balanced debonding at 25  degrees C to cohesive debonding at 50  degrees C and exhibited a 
      sharp decrease. However, in the case of SPSA containing 20 wt% MAI (MAI20), the 
      balanced debonding was maintained at 75  degrees C, and its tack value hardly changed 
      with temperature. As the MAI content increased, the peel strength at 25  degrees C 
      decreased due to the microphase separation between PDMS- and acryl-blocks in 
      SPSA, but the shear adhesion failure temperature (SAFT) increased almost linearly 
      from 41.3 to 122.8  degrees C. Unlike stainless steel substrate, SPSA showed improved 
      peel strength on a polypropylene substrate due to its low surface energy caused 
      by PDMS block. Owing to the addition of 20 wt% silicone-urethane dimethacrylate 
      oligomer and 200 mJ/cm(2) UV irradiation dose, MAI20 showed significantly 
      increased 90 degrees  peel strength at 25  degrees C (548.3 vs. 322.4 gf/25 mm for pristine 
      MAI20). Its heat resistance under shear stress assessed by shear adhesion failure 
      test (SAFT) exhibited raising in failure temperature to 177.3  degrees C when compared to 
      non-irradiated sample.
FAU - Park, Hee-Woong
AU  - Park HW
AD  - Green Chemistry & Materials Group, Korea Institute of Industrial Technology 
      (KITECH), Cheonan 31056, Korea.
AD  - Department of Chemical and Biological Engineering, Korea University, Seoul 02841, 
      Korea.
FAU - Seo, Hyun-Su
AU  - Seo HS
AD  - Green Chemistry & Materials Group, Korea Institute of Industrial Technology 
      (KITECH), Cheonan 31056, Korea.
FAU - Kwon, Kiok
AU  - Kwon K
AD  - Green Chemistry & Materials Group, Korea Institute of Industrial Technology 
      (KITECH), Cheonan 31056, Korea.
FAU - Lee, Jung-Hyun
AU  - Lee JH
AD  - Department of Chemical and Biological Engineering, Korea University, Seoul 02841, 
      Korea.
FAU - Shin, Seunghan
AU  - Shin S
AUID- ORCID: 0000-0001-5522-8561
AD  - Green Chemistry & Materials Group, Korea Institute of Industrial Technology 
      (KITECH), Cheonan 31056, Korea.
AD  - Department of Green Process and System Engineering, University of Science & 
      Technology (UST), Daejeon 34113, Korea.
LA  - eng
GR  - S2830047/Ministry of SMEs and Startups/
GR  - EO200011/Korea Institute of Industrial Technology/
PT  - Journal Article
DEP - 20201019
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC7650628
OTO - NOTNLM
OT  - loop tack
OT  - peel strength
OT  - pressure-sensitive adhesive (PSA)
OT  - silicone acrylic block copolymer
OT  - thermal stability
COIS- The authors declare no conflict of interest.
EDAT- 2020/10/23 06:00
MHDA- 2020/10/23 06:01
PMCR- 2020/10/19
CRDT- 2020/10/22 01:01
PHST- 2020/09/25 00:00 [received]
PHST- 2020/10/13 00:00 [revised]
PHST- 2020/10/15 00:00 [accepted]
PHST- 2020/10/22 01:01 [entrez]
PHST- 2020/10/23 06:00 [pubmed]
PHST- 2020/10/23 06:01 [medline]
PHST- 2020/10/19 00:00 [pmc-release]
AID - polym12102410 [pii]
AID - polymers-12-02410 [pii]
AID - 10.3390/polym12102410 [doi]
PST - epublish
SO  - Polymers (Basel). 2020 Oct 19;12(10):2410. doi: 10.3390/polym12102410.