Fluorinated-polyhedral oligomeric silsesquioxane (F-POSS) functionalized halloysite nanotubes (HNTs) as an antifouling additive for epoxy resin

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2023-12-29 DOI:10.1002/vnl.22081

Julieta Fabienne Uicich, Maryam Jouyandeh, Diana Fasce, Pablo Ezequiel Montemartini, Marcela Elisabeth Penoff, Henri Vahabi, Mohammad Reza Saeb

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引用次数: 0

Abstract

Antifouling epoxy resin serves as a member of advanced nanocomposite coatings and engineered surfaces. Nevertheless, developing an antifouling epoxy composites is a state-of-the-art technology. Herein, a complex nanostructure is tailored to be served as an advanced additive giving the antifouling characteristics to the epoxy resin. F-POSS@HNT hybrid nanostructure, that is, halloysite nanotubes (HNTs) decorated with fluorinated polyhedral oligomericsil sesquioxane (F-POSS), was synthesized and characterized. Chemical structure changes, thermal stability and morphology of hydroxylated HNTs (hHNTs) intermediate and F-POSS@HNT ultimate nanostructures were analyzed by FTIR spectroscopy, TGA and TEM, respectively. The F-POSS@HNTs catalyzed the epoxy-amine crosslinking reaction, taking “Good” or “Excellent” crosslinking tags an quantified by the “Cure Index.” The apparent activation energy values were calculated for the epoxy (reference), epoxy/hHNTs, and epoxy/F-POSS@HNTs systems (26, 51, and 47 kJ mol⁻¹, respectively). Contact angle measurements were performed via dynamic tests demonstrating improved hydro- and oleophobicity of the thermoset composites. The advancing contact angle with diiodomethane increased 36% and 30% for nanocomposites containing 5 and 10 wt.% of the developed hybrid nanostructure, respectively, compared with the neat epoxy. Likewise, 54% and 67% reduction in paraffin fouling in the same order confirmed their antifouling ability. Regarding self-cleaning characteristics, 24% and 33% surface recovery were observed, respectively.

Highlights

Antifouling surface was achieved in epoxy thermoset nanocomposites for potential industrial applications.
Self-cleaning behavior correlated with low wetting and antifouling properties.
F-POSS@HNT nanofillers were synthesized and successfully added to epoxy matrix.
Both hHNT and F-POSS@HNT showed a beneficial autocatalytic effect on epoxy-amine reaction yielding satisfactory polymer crosslinking.
Activation energy was reduced by incorporating F-POSS@HNT compared with hHNT, signature of facilitated crosslinking.

Abstract Image

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氟化多面体低聚硅倍半氧烷（F-POSS）功能化哈洛石纳米管（HNT）作为环氧树脂的防污添加剂

防污环氧树脂是先进纳米复合涂层和工程表面的组成部分。然而，开发防污环氧树脂复合材料是一项最先进的技术。在此，我们定制了一种复杂的纳米结构，作为一种先进的添加剂，赋予环氧树脂防污特性。合成并表征了 F-POSS@HNT 混合纳米结构，即用氟化多面体低聚硅倍半氧烷（F-POSS）装饰的哈洛来石纳米管（HNT）。通过傅立叶变换红外光谱、热重分析和 TEM 分别分析了羟基化 HNTs（hHNTs）中间体和 F-POSS@HNT 终极纳米结构的化学结构变化、热稳定性和形貌。F-POSS@HNT 催化了环氧胺交联反应，以 "固化指数 "量化 "良好 "或 "优秀 "的交联标签。计算了环氧（参考）、环氧/hHNTs 和环氧/F-POSS@HNTs 系统的表观活化能值（分别为 26、51 和 47 kJ mol-1）。通过动态测试进行的接触角测量表明，热固性复合材料的疏水性和疏油性得到了改善。与纯环氧树脂相比，含有 5 和 10 wt.% 所开发混合纳米结构的纳米复合材料与二碘甲烷的接触角分别增加了 36% 和 30%。同样，按相同顺序排列，石蜡污垢分别减少了 54% 和 67%，这证实了它们的防污能力。在自清洁特性方面，观察到的表面恢复率分别为 24% 和 33%。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.