بررسی خصوصیات فیزیکوشیمیایی مونت موریلونیت اصلاح شده با سورفاکتانت کاتیونی

نویسندگان
سارا عرب مفرد 1
سید مهدی جعفری 2
امان محمد ضیائی فر 3
هدی شهیری طبرستانی 4
قاسم بهلکه 5
1 دانشجوی دکتری، گروه مهندسی مواد و طراحی صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.
2 استاد، گروه مهندسی مواد و طراحی صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.
3 دانشیار، گروه مهندسی مواد و طراحی صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.
4 استادیار، گروه شیمی موادغذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.
5 دانشیار، گروه مهندسی شیمی، دانشکده فنی و مهندسی، دانشگاه گلستان، علی آباد کتول، ایران.
10.52547/fsct.19.124.347
چکیده
در این تحقیق، مونت موریلوینت ([1]MMT) با هدف افزایش پتانسیل جذب و بهبود ویژگی‌های عملکردی آن با استفاده از جایگزینی سورفاکتانت کاتیونی هگزادسیل تری متیل آمونیوم برومید ([2]HDTMA) با کاتیون‌های بین لایه‌ای اصلاح شد. جهت بررسی جذب سورفاکتانت به MMT و تعیین ویژگی‌های MMT قبل و بعد از اصلاح شدن، از آنالیزهای دستگاهی پراش اشعه ایکس ([3]XRD)، طیف سنجی تبدیل مادون قرمز فوریه ([4]FTIR)، آنالیز توزین حرارتی و مشتق آن (TGA/DTA[5])، زاویه تماس و پتانسیل زتا استفاده شد. یافته های XRD نشان از افزایش فاصله بین لایه‌های MMT از 17/1 به 02/2 نانومتر به خاطر ورود HDTMA داشت. آنالیزهای زاویه تماس و پتانسیل زتا به ترتیب تغییر ویژگی آب‌دوستی سطح MMT به آب‌گریز و افزایش بار سطحی از 6/21- به 54/2- میلی ولت را نشان داد که تأیید کننده حضور HDTMA بر سطح MMT می‌باشد. پیک‌های حاصل از آنالیزهای FTIR تأیید کننده ورود زنجیره‌های آلکیل سورفاکتانت کاتیونی به فضای بین لایه‌ای MMT است. آنالیز TGA/DTA نیز برهم‌کنش MMT و سورفاکتانت را ثابت کرد. یافته‌های این تحقیق در جهت کاربرد MMT اصلاح شده به عنوان نانوجاذب در صنایع غذایی، شیمیایی و دارویی می‌باشد.


[1] Montmorillonite

[2] Hexa decyl trimethyl ammonium bromide

[3] X-ray diffraction

[4] Fourier-transform infrared spectroscopy

[5] Thermal gravimetric analysis










کلیدواژه‌ها
مونت موریلونیت
سورفاکتانت کاتیونی
خالص سازی
اصلاح کردن

موضوعات

عنوان مقاله English

Investigation of physico-chemical properties of montmorillonite modified with cationic surfactant

نویسندگان English

Sara Arabmofrad 1
Seid Mahdi Jafari 2
Aman Mohamad Ziaiifa 3
Hoda Shahiri Tabarestani 4
Ghasem Bahlakeh 5
1 PhD. student, Department of Food Materials and Process Design Engineering, Faculty of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
2 Professor, Department of Food Materials and Process Design Engineering, Faculty of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
3 Associate Professor, Department of Food Materials and Process Design Engineering, Faculty of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
4 Assistant professor, Department of Food chemistry, Faculty of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
5 Assistant professor, Department of Chemical Engineering, Faculty of Engineering, Golestan university, Aliabad Katoul.
چکیده English

In this study, montmorillonite (MMT) was modified by hexadecyltrimethyl ammonium bromide (HDTMA) to enhance its adsorption capacity and improve its functional properties that it was done through conventional ion exchange. The intercalation of cationic surfactant into layers of MMT and properties of MMT before and after modification was evaluated by Fourier transform infrared (FTIR), X-ray diffraction (XRD) spectroscopy, Thermal gravimetric analysis, contact angle, and zeta potential. The XRD results showed the interlayer spacing was increased from 1.17 to 2.02 nm due to intercalation of HDTMA. The contact angle and zeta potential analyses revealed that the surface wettability of MMT was changed from hydrophilic to hydrophobic and the surface charge was changed from -21.6 to -2.54 due to adsorption of HDTAM on surface of MMT. FTIR spectra show the successful of inserting alkyl groups from cationic surfactant in the interlayer space of MMT. The results are supported by the measurements of TGA/DTA. The findings of this study are useful for the application of modified MMT as a nanoadsorbent for food, chemical, and pharmaceutical industries.

کلیدواژه‌ها English

Montmorillonite
Cationic surfactant
Purification
Modification
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