PMID- 37403551
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230719
IS  - 1744-6848 (Electronic)
IS  - 1744-683X (Linking)
VI  - 19
IP  - 28
DP  - 2023 Jul 19
TI  - Adhesion and mechanical properties of poly(dimethylsiloxane) bottlebrush 
      elastomers.
PG  - 5311-5317
LID - 10.1039/d3sm00346a [doi]
AB  - Poly(dimethylsiloxane) (PDMS) bottlebrush elastomers (BBEs) are attractive soft 
      materials with well-controlled bulk mechanical properties. However, their surface 
      and interfacial properties have not been studied in depth. We report a detailed 
      study of the adhesion of PDMS BBEs to glass using a contact adhesion test to 
      determine the critical energy release rates, G(c), as a function of interfacial 
      separation velocity. For BBEs, G(c) for initiating separation, G(0), was found to 
      be independent of the crosslink density. We hypothesize that the monomer 
      chemistry of side chains plays a primary role in defining surface properties for 
      this materials system. After crack initiation, BBEs showed a significantly lower 
      G(c) and less velocity dependence than linear chain networks. Scaling analysis 
      attributes these properties to the faster dissipative relaxation mechanisms 
      within the BBEs. These findings demonstrate that the adhesion properties of BBEs 
      can be finely tuned through the monomer chemistry and side chain length for 
      potential applications.
FAU - Kim, Hyemin
AU  - Kim H
AUID- ORCID: 0009-0003-2444-4079
AD  - Department of Polymer Science and Engineering, University of Massachusetts 
      Amherst, Amherst, Massachusetts 01003, USA. watkins@polysci.umass.edu.
FAU - Watkins, James J
AU  - Watkins JJ
AD  - Department of Polymer Science and Engineering, University of Massachusetts 
      Amherst, Amherst, Massachusetts 01003, USA. watkins@polysci.umass.edu.
FAU - Crosby, Alfred J
AU  - Crosby AJ
AUID- ORCID: 0000-0001-8850-8869
AD  - Department of Polymer Science and Engineering, University of Massachusetts 
      Amherst, Amherst, Massachusetts 01003, USA. watkins@polysci.umass.edu.
LA  - eng
PT  - Journal Article
DEP - 20230719
PL  - England
TA  - Soft Matter
JT  - Soft matter
JID - 101295070
SB  - IM
EDAT- 2023/07/05 06:42
MHDA- 2023/07/05 06:43
CRDT- 2023/07/05 03:34
PHST- 2023/07/05 06:43 [medline]
PHST- 2023/07/05 06:42 [pubmed]
PHST- 2023/07/05 03:34 [entrez]
AID - 10.1039/d3sm00346a [doi]
PST - epublish
SO  - Soft Matter. 2023 Jul 19;19(28):5311-5317. doi: 10.1039/d3sm00346a.