مهندسی شیمی ایران

مهندسی شیمی ایران

سنتز کوپلیمر سه‌بلوکی دوگانه‌دوست PS-b-PEG-b-PS به‌روش بسپارش رادیکالی انتقال اتم (ATRP) و بررسی اثر بازدارندگی در تشکیل هیدرات گازی متان

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشجوی کارشناسی ارشد مهندسی شیمی، دانشگاه فردسی مشهد
2 دانشیار مهندسی شیمی، دانشگاه فردوسی مشهد
3 آزمایشگاه آزمون‌های قطعات پلیمری (RPT Lab.)، پژوهشکدۀ نفت و گاز، دانشگاه فردوسی مشهد
4 دانشجوی دکتری مهندسی شیمی، دانشگاه فردوسی مشهد
5 استادیار شیمی پلیمر، دانشگاه تحصیلات تکمیلی علوم پایۀ زنجان
چکیده
در این پژوهش، کوپلیمر سه‌بلوکی دوگانه‌دوست پلی‌استایرن- پلی‌اتیلن گلایکول- پلی‌استایرن (PS-b-PEG-b-PS) بااستفاده‌از روش ATRP سنتز شد. بااستفاده‌از نتایج آنالیزهای FTIR و NMR سنتز موفقیت‌آمیز این کوپلیمر سه‌بلوکی تأیید شد. آزمایش‌های بررسی عملکرد بازدارندگی تشکیل هیدرات درحضور گاز متان و داخل راکتور نوسانی الاکلنگی در فشار اولیۀ 68 بار و دمای 1/5 درجۀ سلسیوس انجام شد. پتانسیل تأثیر بازدارندگی سینتیکی کوپلیمر سنتزشده PS-b-PEG-b-PS در غلظت‌های 0/05 و 0/1 درصد وزنی بررسی شد و با داده‌های مشابه بازدارنده‌های تجاری شامل پلی‌وینیل پیرولیدون (PVP) و Luvicap EG به‌عنوان یک بازدارندۀ سینتیکی برپایۀ پلی‌وینیل کاپرولاکتام (PVCap) ساخت شرکت BASF مقایسه شد. نتایج نشان داد که کوپلیمر سنتزشدۀ PS-b-PEG-b-PS در غلظت 0/1 وزنی تا حدود 92 درصد عملکرد بازدارندگی داشته، درحالی‌که پلیمر PVP به‌عنوان یک بازدارندۀ تجاری تا 84 درصد عملکرد بازدارندگی داشته‌است.
به‌علاوه، سرعت مصرف گاز در حضور کوپلیمر سنتزشده PS-b-PEG-b-PS تا 6 برابر نسبت‌به Luvicap EG و تا 2 برابر نسبت‌به PVP کاهش نشان داد. کوپلیمر دوگانه‌دوست سه‌بلوکی سنتزشده PS-b-PEG-b-PS  با روش ATRP می‌تواند به‌عنوان یک بازدارندۀ بالقوۀ جدید سینتیکی هیدرات گازی معرفی شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Synthesis of PS-b-PEG-b-PS Amphiphilic Triblock Copolymer by Atom Transfer Radical Polymerization (ATRP) Method and Investigation of Inhibitory Effect on Methane Gas Hydrate Formation

نویسندگان English

A. Mohammadi 1
A. Dashti 2 3
M. Najipoor 4 3
A. Abdollahi 5
1 M. Sc. Student of Chemical Engineering, Ferdowsi University of Mashhad
2 Associate Professor of Chemical Engineering, Ferdowsi University of Mashhad
3 Research Laboratory of Polymer Testing (RPT Lab.), Oil & Gas Institute, Ferdowsi University of Mashhad
4 Ph. D. Student of Chemical Engineering, Ferdowsi University of Mashhad
5 Assistant Professor of Polymer Chemistry, Institute for Advanced Studies in basic Sciences Zanjan
چکیده English

In this research, polystyrene-poly (ethylene glycol)-polystyrene (PS-b-PEG-b-PS) amphiphilic triblock copolymer was synthesized by atom transfer radical polymerization (ATRP) method. The results of FTIR and NMR analyses were confirmed the successful synthesis of the presented triblock copolymer.
The experiments of hydrate inhibition performanc testing were carried out in the presence of methane gas using rocking-cell reactor at initial pressure of 68 bar and 1.5oC, respectively. The potential kinetic inhibitory effect of synthesized PS-b-PEG-b-PS copolymer was investigated at the conectrations of 0.05 and 0.1 wt% and compared with the similar data of commercial inhibitors including polyvinylpyrrolidone (PVP) and Luvicap EG as a polyvinylcaprolactam (PVCap)-based kinetic inhibitor from BASF. The obtained results showed that the synthesized PS-b-PEG-b-PS at concentration of 0.1% wt had about 92% inhibitory performance, while PVP as a commercial inhibitor had up to 84% inhibitory performance. Furthermore, the rate of gas consumption in the presence of the synthesized PS-b-PEG-b-PS was decreased about 6 times compared to Luvicap EG and 2 times less than to PVP one. The synthesized amphiphilic triblock PS-b-PEG-b-PS copolymer by ATRP method could be introduced as a new potential kinetic gas hydrate inhibitor
.
 

کلیدواژه‌ها English

Block Copolymer
Amphiphile
Atom Transfer Radical Polymerization (ATRP)
Kinetic Gas Hydrate Inhibitor
Methane Gas
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