材料科学
皮克林乳液
相变材料
原位聚合
结晶
石蜡
复合材料
化学工程
乳状液
纤维素
热能储存
相变
聚合
蜡
纳米技术
聚合物
纳米颗粒
生态学
工程物理
工程类
生物
作者
Wei Liu,Qingyi Lin,Siyu Chen,Hongbin Yang,Kun Liu,Bo Pang,Ting Xu,Chuanling Si
标识
DOI:10.1007/s42114-023-00725-1
摘要
Abstract Phase change materials (PCMs) possess remarkable capability to store and release substantial amounts of energy during the processes of melting and crystallization across a wide temperature range, thus holding great promise in applications related to temperature regulation and thermal energy storage. Herein, to effectively address PCM leakage and enhance thermal conduction, PCM microcapsules with melamine–formaldehyde resin (MF) shell were prepared using in situ polymerization of Pickering emulsions stabilized by cellulose nanofibrils (CNFs). CNFs were selected as the stabilizers for the Pickering emulsions and as reinforcing nanofillers for the MF shell, owing to their excellent emulsifying capability, high mechanical strength, and sustainable nature. Paraffin wax (PW) was utilized as the PCM material. The resulting PCM microcapsules with MF resin shells and PW core had a diameter ranging from 2 to 4 µm. Results showed that microcapsule with the core–shell ratio of 2 (Micro-2.0) exhibited the highest latent heat of crystallization and latent heat of fusion, measuring approximately 128.40 J/g and 120.23 J/g, respectively. The encapsulation efficiency of Micro-2.0 was determined to be approximately 79.84%.
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