具有智能、精细多浸润状态调控的双响应形状记 忆聚合物阵列

Translated title of the contribution: Dual-responsive shape memory polymer arrays with smart and precise multiple-wetting controllability

Dongjie Zhang, Qixing Xia, Hua Lai, Zhongjun Cheng, Pengchang Liu, Haiyang Zhang, Yuyan Liu, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)

Abstract

Smart-controlled surface wettability from superhydrophilicity to superhydrophobicity has been extensively explored, and stimulus-responsive strategies have been widely accepted as a useful method to realize reversibility. However, achieving smart and precise wetting control remains challenging because most previous studies focused on stimulating single surface chemistry or microstructures. Herein, a dual-stimulus-responsive strategy that can synergistically stimulate surface chemistry and microstructures is demonstrated on the pH-responsive molecule poly(2-(diisopropylamino)ethyl methacrylate (PDPAEMA)-modified temperature-triggered shape memory polymer (SMP) arrays. The responsive PDPAEMA and SMP can provide the surface with tunable surface chemistry and microstructures, respectively. Thus, the wetting of the surface between various states can be reversibly and precisely controlled from superhydrophilicity to superhydrophobicity with contact angle (CA) differences of less than 15° under the cooperative effect between the adjustable surface microstructure and chemistry. The surface is further utilized as a platform to create gradient wettings based on its excellent controllability. Therefore, this work presents a strategy for surface wetting control by combining tunable surface microstructures and chemistry. The prepared samples with a special wetting controllability can be applied to numerous fields, including adaptive liquid microlenses, accurate drug release, and selective catalysis. This work also proposes novel expectations in designing smart functional surfaces.[Figure not available: see fulltext.].

Translated title of the contributionDual-responsive shape memory polymer arrays with smart and precise multiple-wetting controllability
Original languageMandarin
Pages (from-to)1801-1812
Number of pages12
JournalScience China Materials
Volume64
Issue number7
DOIs
Publication statusPublished - Jul 2021
Externally publishedYes

Keywords

  • PDPAEMA
  • shape memory polymer
  • superhydrophilicity
  • superhydrophobicity
  • wetting control

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