Effect of hydrophobic polystyrene microphases on temperature-responsive behavior of poly(N-isopropylacrylamide) hydrogels

Yi, Fangping; Zheng, Sixun

doi:10.1016/j.polymer.2008.11.038

Cited by 24 publications

(13 citation statements)

References 60 publications

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“…For an efficient RAFT polymerization (Scheme 1, Fig. 3 22* [86] S S MA [54] AAEMA [87] MAEP [87] MMA [88,89] AEMA [90] DMAEMA [91] (TPMMA) [92] TFPMA [93] St [48,94,95] 277 [96] 278 [96] 392 [97,98] 345 [99] 348 [100] 347 [101] St [51] 364 [102] 365 [102] NVP [103] 385 [104] 386 [98] 387 [104] 388 [104] 389 [104] 390 [104] BA/ 407 [105] St/MAH [53] AAEMA-b-AEP [87] AAEMA-b-MAEP [87] MAEP-b-AAEMA [87] BMA/TMSEMA [106] TFPMA-b-tBA [93] St-b-NIPAM [95] St-b-HEMA/DMAEMA [86] 364-b-384 [102] 365-b-384 [102] 386-b-392 [97] 23* [107] S CN S DEGMA [108] EGMA [108] MAA [108] MMA [109] PEGMA …”

Section: Choice Of Raft Agentsmentioning

confidence: 99%

“…Polymer networks can be formed by crosslinking RAFTsynthesized homopolymers, block copolymers, [95,243,370] or star polymers [267] or can be formed directly by a RAFT (co)polymerization in te presence of crosslinking monomer (e.g., a divinyl monomer, ethylene glycol dimethacrylate, methylene-bis-acrylamide). [544,545] A wide variety of crosslinking processes have been explored.…”

Section: Polymer Networkmentioning

confidence: 99%

See 1 more Smart Citation

Living Radical Polymerization by the RAFT Process - A Second Update

Moad¹,

Rizzardo²,

Thang³

2009

Aust. J. Chem.

906

720

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This paper provides a second update to the review of reversible deactivation radical polymerization achieved with thiocarbonylthio compounds (ZC(=S)SR) by a mechanism of reversible addition-fragmentation chain transfer (RAFT) that was published in June 2005 (Aust. J. Chem. 2005, 58, 379-410). The first update was published in November 2006 (Aust. J. Chem. 2006, 59, 669-692). This review cites over 500 papers that appeared during the period mid-2006 to mid-2009 covering various aspects of RAFT polymerization ranging from reagent synthesis and properties, kinetics and mechanism of polymerization, novel polymer syntheses and a diverse range of applications. Significant developments have occurred, particularly in the areas of novel RAFT agents, techniques for end-group removal and transformation, the production of micro/nanoparticles and modified surfaces, and biopolymer conjugates both for therapeutic and diagnostic applications.

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Section: Choice Of Raft Agentsmentioning

confidence: 99%

Section: Polymer Networkmentioning

confidence: 99%

Living Radical Polymerization by the RAFT Process - A Second Update

Moad¹,

Rizzardo²,

Thang³

2009

Aust. J. Chem.

906

720

View full text Add to dashboard Cite

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“…36,37 In the PNIPAAm microgels system, there exists a hydrophilic/ hydrophobic balance in the NIPAAm unit resulting from the amide group (hydrophilic) and isopropyl group (hydrophobic) regions of the PNIPAAm (Figure 4). As described previously, when the temperature was lower than LCST, the strong H-bonding between the hydrophilic groups and water outweighs the unfavorable free energy related to the exposure of hydrophobic groups to water, leading to a good polymer solubility in water; when the temperature was higher than LCST, the hydrogen bonds are overwhelmed by the hydrophobic interactions between the hydrophobic groups, and osmotic pressure played a major role in the drug release process.…”

Section: Characterization Of Drug-free and Cya-hapn Microgels Drug Lomentioning

confidence: 99%

Enhanced and sustained topical ocular delivery of cyclosporine A in thermosensitive hyaluronic acid-based in situ forming microgels

Wu¹,

Yao²,

Zhou³

et al. 2013

IJN

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“…Generally, the wettability of a solid surface is mainly caused by the chemical composition and structure asperities, which depend on surface energy and geometric structure [7]. To obtain hydrophobic polymer surfaces, coating with low surface energy materials such as fluoroalkylsilane can be helpful [8][9][10][11][12]. On the other hand, geometric structures including rough structures and regular micro/nano patterns are also crucial [13,14].…”

Section: Introductionmentioning

confidence: 99%

Wettability transition of plasma-treated polystyrene micro/nano pillars-aligned patterns

Kong¹,

Yung²,

Xu³

et al. 2010

Express Polym. Lett.

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Abstract. This paper reports the wettability transition of plasma-treated polystyrene (PS) micro/nano pillars-aligned patterns. The micro/nano pillars were prepared using hot embossing on silicon microporous template and alumina nanoporous template, which were fabricated by ultraviolet (UV) lithography and inductive coupled plasma (ICP) etching, and two-step anodic oxidation, respectively. The results indicate that the combination of micro/nano patterning and plasma irradiation can easily regulate wettabilities of PS surfaces, i.e. from hydrophilicity to hydrophobicity, or from hydrophobicity to superhydrophilicity. During the wettability transition from hydrophobicity to hydrophilicity there is only mild hydrophilicity loss. After plasma irradiation, moreover, the wettability of PS micro/nano pillars-aligned patterns is more stable than that of flat PS surfaces. The observed wettability transition and wettability stability of PS micro/nano pillars-aligned patterns are new phenomena, which may have potential in creating programmable functional polymer surfaces.

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Effect of hydrophobic polystyrene microphases on temperature-responsive behavior of poly(N-isopropylacrylamide) hydrogels

Cited by 24 publications

References 60 publications

Living Radical Polymerization by the RAFT Process - A Second Update

Living Radical Polymerization by the RAFT Process - A Second Update

Enhanced and sustained topical ocular delivery of cyclosporine A in thermosensitive hyaluronic acid-based in situ forming microgels

Wettability transition of plasma-treated polystyrene micro/nano pillars-aligned patterns

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