Poly(N-acryloyl glycine) based temperature/pH-responsive hydrogels reinforced with montmorillonite for plugging of damaged oil pipeline

IF 2.6 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2024-11-15 DOI:10.1007/s10965-024-04199-7

Ruixuan Ni, Ziteng Yang, Li Wang, Shanshan Dai, Hongsheng Lu

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Abstract

Hydrogel as a temporary plugging material provides an efficient strategy to replace locally damaged oil pipelines. However, the poor mechanical properties and incomplete gel-breaking severely limit the practical application of this strategy. Herein, a temperature and pH-responsive hydrogel P(ACG-co-AM)-MMT was prepared by copolymerizing a natural amino acid derivative monomer N-acryloyl glycine (ACG) and acrylamide (AM) with montmorillonite (MMT) as filling material. Hydrogen bonding is the main driving force in hydrogel formation, as confirmed by infrared spectroscopy. The introduction of MMT plays a key role in enhancing the mechanical properties of hydrogels. This successfully overcame the issues of inadequate mechanical properties-rapid degradation trade-off in hydrogel temporary plugging materials. The results show that the hydrogel can withstand the pipeline pressure up to 84 kPa and effectively plug the pipeline. Due to the reversibility of hydrogen bonds, the hydrogel can realize the transformation of sol-gel-sol under temperature stimulation. The plugged area of the pipeline is removed by injecting thermal-produced water. When the hot water temperature is 85 ℃, the pipeline changes to the dredging state only 21 min, dramatically simplifying the operation time. P(ACG-co-AM)-MMT hydrogel has great potential as a temporary plugging material in replacing partially damaged oil pipeline plugging operations.

Graphical Abstract

Abstract Image

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用蒙脱石增强的基于聚（N-丙烯酰甘氨酸）的温度/pH 响应水凝胶用于堵塞受损的输油管道

水凝胶作为一种临时堵塞材料，为更换局部受损的输油管道提供了一种有效的策略。然而，较差的机械性能和不完全的凝胶破碎严重限制了这一策略的实际应用。本文以蒙脱石（MMT）为填充材料，通过共聚天然氨基酸衍生物单体 N-丙烯酰甘氨酸（ACG）和丙烯酰胺（AM），制备了一种温度和 pH 值响应型水凝胶 P（ACG-co-AM）-MMT。红外光谱证实，氢键是水凝胶形成的主要驱动力。引入 MMT 对提高水凝胶的机械性能起着关键作用。这成功地克服了水凝胶临时堵塞材料中机械性能不足-快速降解权衡的问题。结果表明，该水凝胶可承受高达 84 kPa 的管道压力，并能有效堵塞管道。由于氢键的可逆性，水凝胶在温度刺激下可实现溶胶-凝胶-溶胶的转变。通过注入热产水，管道堵塞区域被清除。当热水温度为 85 ℃ 时，管道转变为疏通状态仅需 21 分钟，大大简化了操作时间。P(ACG-co-AM)-MMT水凝胶作为一种临时堵塞材料，在替代部分损坏的输油管道堵塞作业中具有巨大潜力。图文摘要

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.