PMID- 31822066 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20200113 LR - 20200113 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 12 IP - 1 DP - 2020 Jan 8 TI - Photo-Driven Self-Healing of Arbitrary Nondestructive Damage in Polyethylene-Based Nanocomposites. PG - 1650-1657 LID - 10.1021/acsami.9b19440 [doi] AB - Polymer products with precise shape recovery behavior are highly desired for practical applications owing to excellent processability and mechanical properties compared with metallic or inorganic materials. Shape memory polymers (SMPs) provide a solution for this end, but the design and scalable fabrication of photothermal controllable SMPs with accurate, rapid, and repeatable recovery behaviors are still great challenges. In this work, polyurethane/sulfonated carbon nanotube (PU/S-CNT) composite particles are introduced into a cross-linked high-density polyethylene (HDPE) as a functional dispersed phase to realize photo-driven fast shape recovery in cheap polymer composite materials. It is found that microcracks can be induced by the PU/S-CNT composite particles during deformation, generating a particular microparticle in a microcrack (MC-MP) structure. The MC-MP microstructure significantly improves the photothermal conversion efficiency, thereby accelerating the photo-driven shape self-healing of arbitrary nondestructive material damage. It is also found that proper cross-linking of the matrix, HDPE, greatly improves the recovery performance of the materials. This strategy based on the MC-MP microstructure and cross-linked matrix is also instructive for designing new SMPs using other polymer materials. FAU - Yu, Peng AU - Yu P AD - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China. FAU - Guo, Xiao-Shuai AU - Guo XS AD - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China. FAU - Bao, Rui-Ying AU - Bao RY AUID- ORCID: 0000-0002-1373-7154 AD - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China. FAU - Liu, Zheng-Ying AU - Liu ZY AD - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China. FAU - Yang, Ming-Bo AU - Yang MB AUID- ORCID: 0000-0001-7950-7645 AD - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China. FAU - Yang, Wei AU - Yang W AUID- ORCID: 0000-0003-0198-1632 AD - College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering , Sichuan University , Chengdu 610065 , Sichuan , People's Republic of China. LA - eng PT - Journal Article DEP - 20191220 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 SB - IM OTO - NOTNLM OT - cross-linking OT - microcracks OT - photo-driven self-recovery OT - photothermal efficiency OT - shape memory polymer EDAT- 2019/12/12 06:00 MHDA- 2019/12/12 06:01 CRDT- 2019/12/12 06:00 PHST- 2019/12/12 06:00 [pubmed] PHST- 2019/12/12 06:01 [medline] PHST- 2019/12/12 06:00 [entrez] AID - 10.1021/acsami.9b19440 [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2020 Jan 8;12(1):1650-1657. doi: 10.1021/acsami.9b19440. Epub 2019 Dec 20.