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Chemical Structure| 3739-67-1

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Kim, Young-Hun ; Kim, Jongwon ; Baek, Jeong Ju ; Chang, Ki Cheol ; Park, Baek Soo ; Bae, Geun Yeol , et al.

Abstract: The rapid advancement of flexible and wearable devices has increased the demand for substrate materials with excellent elasticity, biocompatibility, and transparency. Polydimethylsiloxane (PDMS) is widely used in these applications due to its advantageous properties. However, its inherently low surface energy limits its adhesion in high-stretchability contexts. To address this issue, various surface modification techniques have been developed, but these methods often alter the intrinsic properties of PDMS or introduce complexities in the manufacturing process. This study proposes elastomers based on ultraviolet (UV)-curable siloxane resins, which retain outstanding flexibility and transparency while significantly enhancing adhesion properties. UV-curable siloxanes were synthesized to prepare elastomers that were evaluated for their mechanical, thermal, and surface properties in comparison with PDMS. Results indicate that the prepared elastomers can be rapidly cured under UV exposure, achieving storage moduli 6 and 37 times higher than those of PDMS at 25 ◦C and 100 ◦C, respectively. Furthermore, thermal conductivity improved by 60 %, and the coefficient of thermal expansion was reduced by 26 %, demonstrating superior mechanical stability across diverse conditions. Adhesion properties were also markedly enhanced, as shown by peel-test adhesion strength that was 7 times greater than that of conventional PDMS.

Keywords: PDMS ; Photocurable siloxane ; Substrate adhesion ; Elastomers ; Flexible substrate

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Product Details of [ 3739-67-1 ]

CAS No. :3739-67-1
Formula : C21H24O2
M.W : 308.41
SMILES Code : CC(C)(C1=CC=C(OCC=C)C=C1)C2=CC=C(C=C2)OCC=C
MDL No. :MFCD01218874
InChI Key :SCZZNWQQCGSWSZ-UHFFFAOYSA-N
Pubchem ID :77333

Safety of [ 3739-67-1 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P280-P305+P351+P338
 

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