سنتز نانو کامپوزیت پلی‌متیل استایرن/ نانوذرات اکسید روی (ZnO) به روش پلیمریزاسیون درجا (هم‌زمان)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشکده شیمی، دانشگاه پیام نور، تهران، ایران

2 دانشکده فناوری‌های نوین، دانشگاه بناب، بناب، ایران

3 دانشکده شیمی، گروه شیمی کاربردی، دانشگاه تبریز، تبریز

چکیده

در این کار، نانوکامپوزیت پلی متیل استایرن/ اکسید روی با استفاده از پلیمریزاسیون رادیکالی درجا سنتز گردید. نانو ذرات اکسید روی (ZnO) استفاده شده به روش رسوب‎گیری سنتز شد. ذرات به‌دست آمده با استفاده از روش پراش اشعه ایکس و میکروسکوپ الکترونی پویشی مورد شناسایی قرار گرفت. قطر اندازه ذرات برابر nm 23 می‌باشد. سپس سطح نانوذرات به‌وسیله جفت‌کننده سیلانی اصلاح گردید، تا پخش شدگی خوب و امتزاج‌پذیری خوبی بین ذرات معدنی و ماتریکس پلیمری ایجاد گردد. سپس نانوذرات اصلاح شده با معرف سیلانی در منومر متیل استایرن پخش گردید و پلیمریزاسیون رادیکالی درجا در حضور آغازگر رادیکالی AIBN انجام گرفت. مواد حاصل به‌وسیله روش‌های UV-Vis ،FT-IR ،TEM،SEM ،XRD  و HNMRمورد شناسایی قرار گرفت. نقش نانو ذرات اکسید روی بر روی خواص حرارتی و دمای شیشه‌ای پلی متیل استایرن با استفاده از تکنیک‌های TGA و DSC مورد بررسی قرار گرفته است.
 

کلیدواژه‌ها


عنوان مقاله [English]

Synthesis of Polymethylstyrene/Zink Oxide (ZnO) Nanoparticles Nanocomposite by In Situ Polymerization

نویسندگان [English]

  • Mojtaba Abbasian 1
  • Saeid Yeghaneh Fathi 2
  • Alireza Khataee 3
1 Department of Chemistry, Payame Noor University, Tehran, Iran
2 Department of Chemistry, Payame Noor University, Tehran, Iran
3 2. Faculty of Chemistry, Tabriz University, Tabriz, Iran
چکیده [English]

In this study, zinc oxide/polymethylstyrene (PMSt) nanocomposite was prepared by in situ radical polymerization method. The applied ZnO nanoparticles were prepared by precipitation method. The obtained samples were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) continuously and the average crystallite size of nanoparticles was calculated and a crystallite diameter of 23 nm was obtained. The surface of ZnO nanoparticles was modified by silane coupling agent to obtain a good dispersion and to improve compatibility between inorganic nanoparticles and organic matrix. The modified ZnO nanoparticles were dispersed in methylstyrene and in situ radical polymerization were carried out in the presence of 2, 2’-azobisisobutyronitrile. The prepared materials were characterized by XRD, SEM, TEM, FT-IR, UV-Vis, and 1HNMR techniques. The effect of ZnO nanoparticles on the thermal properties and glass transition temperature of PMSt was investigated using thermo-gravimetric analysis (TGA) and differential scanning calorimetric (DSC) techniques.

کلیدواژه‌ها [English]

  • Zinc Oxide Nanoparticles
  • Surface Modification
  • Nanocomposite
  • Polymethystyrene
  • In situ Polymerization

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