TY - JOUR
T1 - Locking organic solvents by crystallization-induced polymer network
AU - Zhu, Jinmeng
AU - Ding, Jinghan
AU - Li, Yuke
AU - He, Zhang
AU - Ma, Zhenzhen
AU - Dong, Wenqiang
AU - Zhao, Xichen
AU - Li, Xuanhua
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/11/15
Y1 - 2024/11/15
N2 - Organogels that lock organic solvents within a polymer network shows promising applications in ice-phobicity, anti-biofouling, conserving cultural heritage etc. However, the synthesis of organogels by versatile and cost-effective methods still remain challenging. Here, we introduce a novel and economical approach to organogel preparation via crystallization-induced polymer precipitation, which involves the straightforward blending of carbonyl contained polymer, nano Ca(OH)2, and excess ethyl acetate (EA). During the formation, nano Ca(OH)2 reacts with EA to produce ethanol and calcium acetate, in which Ca2+ ionically bonds with carbonyl of polymer. Due to the low solubility in EA and ethanol, calcium acetate initiates crystallization. The interaction between Ca(CH3COO)2 and polymer induces the separation of polymer from the solvent, thereby forming a network that locks the surplus EA and ethanol. More importantly, the organogel is capable not only of encapsulating 12 organic solvents within its precursor but also of effectively removing various aged polymeric coatings from wall paintings without leaving residues. This innovative organogel system marks a significant forward in the realm of organogel with applications in conservation and surface engineering.
AB - Organogels that lock organic solvents within a polymer network shows promising applications in ice-phobicity, anti-biofouling, conserving cultural heritage etc. However, the synthesis of organogels by versatile and cost-effective methods still remain challenging. Here, we introduce a novel and economical approach to organogel preparation via crystallization-induced polymer precipitation, which involves the straightforward blending of carbonyl contained polymer, nano Ca(OH)2, and excess ethyl acetate (EA). During the formation, nano Ca(OH)2 reacts with EA to produce ethanol and calcium acetate, in which Ca2+ ionically bonds with carbonyl of polymer. Due to the low solubility in EA and ethanol, calcium acetate initiates crystallization. The interaction between Ca(CH3COO)2 and polymer induces the separation of polymer from the solvent, thereby forming a network that locks the surplus EA and ethanol. More importantly, the organogel is capable not only of encapsulating 12 organic solvents within its precursor but also of effectively removing various aged polymeric coatings from wall paintings without leaving residues. This innovative organogel system marks a significant forward in the realm of organogel with applications in conservation and surface engineering.
KW - Crystallization
KW - Cultural heritage conservation
KW - Inorganic cross-linker
KW - Nano Ca(OH)
KW - Organogel
UR - http://www.scopus.com/inward/record.url?scp=85206874717&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2024.138844
DO - 10.1016/j.conbuildmat.2024.138844
M3 - 文章
AN - SCOPUS:85206874717
SN - 0950-0618
VL - 451
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 138844
ER -