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Facile Fabrication, Structures, and Properties of Laser‐Marked Polyacrylamide/Bi 2 O 3 Hydrogels
Author(s) -
Cao Zheng,
Hu Yanchao,
Yu Qiang,
Lu Ying,
Wu Dun,
Zhou An,
Ma Wenzhong,
Xia Yanping,
Liu Chunlin,
Loos Katja
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600826
Subject(s) - self healing hydrogels , materials science , laser , polyacrylamide , bismuth , x ray photoelectron spectroscopy , raman spectroscopy , laser power scaling , chemical engineering , analytical chemistry (journal) , optics , polymer chemistry , metallurgy , chemistry , organic chemistry , physics , engineering
Laser marking of wet and soft polyacrylamide/bismuth oxide (PAM/Bi 2 O 3 ) hydrogel materials can be achieved by simply embedding Bi2O3 particles inside PAM hydrogels and a subsequent laser treatment with a Nd: YAG laser beam at 1064 nm. In comparison with the pure hydrogel, the marking properties of the laser‐marked PAM/Bi 2 O 3 hydrogel samples vary as the Bi 2 O 3 content increase from 0.17 to 3.0 wt% and as the laser power increase from 23.5 to 47.0 W. SEM, XPS, XRD, TGA, Raman spectroscopy, water contact angle and mechanical property tests are performed to characterize the laser‐marked PAM/Bi 2 O 3 hydrogels. The results herein indicate that the marking contrast and visual appearance on the surface of the PAM/Bi 2 O 3 hydrogels after laser irradiation are mainly due to the decomposition of Bi 2 O 3 to black bismuth metal.