En
  • دکتری (1387)

    صنایع سلولزی

    دانشگاه تهران، ایران

  • کارشناسی‌ارشد (1383)

    علوم و صنایع چوب و کاغذ

    دانشگاه تهران، ایران

  • کارشناسی (1381)

    علوم و صنایع چوب و کاغذ

    دانشگاه تهران، ایران

  • ارتقاء و بهینه سازی کیفیت فرآیند و محصولات کاغذی تولیدی از الیاف بازیافتی
  • تولید محصولات زیستی با ارزش افزوده از بازیافت انواع پسماندهای لیگنوسلولزی
  • آزمایشگاه فناوری بازیافت مواد لیگنوسلولزی

مهدی رحمانی نیا دانشیار دانشگاه تربیت مدرس در رشته صنایع چوب و فراورده های سلولزی-گرایش صنایع سلولزی بوده و در حال حاضر دارای فعالیت های آموزشی و پژوهشی در مقاطع ارشد و دکتری در زمینه های مرتبط با بازیافت محصولات سلولزی به ویژه در بخش ارتقای کیفی الیاف کاغذهای بازیافتی، بهینه سازی فرآیند تولید کاغذهای بازیافتی و تولید محصولات زیستی با ارزش افزوده بیشتر از الیاف بازیافتی می باشد. او مدرک کارشناسی ارشد خود را در رشته علوم و صنایع چوب و کاغذ از دانشگاه تهران (1381) و مدرک دکتری خود ار در رشته صنایع سلولزی از دانشگاه تهران(1387) اخذ نموده است. 9 ماه پژوهش در موسسه تکنولوژی آسیا (َAIT) با مدیریت سازمان ملل و همکاری پژوهشی یک ساله با دانشگاه شهید بهشتی از جمله تجربیات ایشان در عرصه تخصصی می باشد. وی در سال 1390 به دانشگاه تربیت مدرس پیوست و تدریس دروس فناوری های بازیافت کاغذ، آنالیز دستگاهی، فیزیک و مکانیک کاغذ و آزمایشگاه پیشرفته خمیرکاغذ از سوابق آموزشی وی می باشد. همچنین در حوزه پژوهشی نیز پایان نامه ها و رساله های متعددی در داخل و خارج از دانشگاه با راهنمایی و یا مشاوره وی انجام گردیده اند. او در سالهای اخیر همکاری مستمری با موسسات و دانشگاههای مختلفی در خارج از کشور مانند گرنوبل فرانسه، آکادمی علوم چین، دانشگاه ایالتی کارولینای شمالی داشته است. وی از سال 1400 به عضویت فرهنگستان علوم ایران نائل گردیده است.

ارتباط

رزومه

Integrated and sustainable preparation of functional nanocellulose via formic acid/choline chloride solvents pretreatment

M Wu, K Liao, C Liu, G Yu, M Rahmaninia, H Li, B Li
Journal Papers , , {Pages }

Abstract

Formaldehyde adsorption capacity of chitosan derivatives as bio-adsorbents for wood-based panels

Ali Shalbafan, Hedi Hassannejad, Mehdi Rahmaninia
Journal PapersInternational Journal of Adhesion and Adhesives , 2020 June 25, {Pages 102669 }

Abstract

Chitosan and its derivatives (grafted chitosan and chitosan nanoparticles) were used as bio-based adsorbents in urea-formaldehyde (UF) resins, and accordingly, their effects on the curing behavior, resin structure, crystalline structure, and formaldehyde emission (FE) of final resin has been investigated. Synthesis of grafted chitosan and chitosan nanoparticles was confirmed by FTIR spectroscopy. Characteristics of UF resins were monitored by 13C-NMR and X-ray diffraction. This analysis showed that the free formaldehyde and crystallinity of UF resin having chitosan-based adsorbents were substantially reduced. The FE was largely decreased in the medium density fiberboard (MDF) containing chitosan nanoparticles (60%), followed by grafted chit

Raw and Oxidized Starch Performance as Reinforcing Additives of Internal Bond in Recycled Multilayer Paperboards

Ehsan Fatehi, Amir Rahmaninia, Mehdi, Khosravani, Zeynab Iron
Journal PapersIranian journal of Wood and Paper Science Research , Volume 35 , Issue 1, 2020 January , {Pages 76-87 }

Abstract

Lignocellulosic hydrogel from recycled old corrugated container resources using ionic liquid as a green solvent

Seyed Mostafa Hashemi Sangtarashani, Mehdi Rahmaninia, Rabi Behrooz, Amir Khosravani
Journal PapersJournal of Environmental Management , 2020 January , {Pages }

Abstract

Lignocellulosic hydrogels are valuable bio-products that have been considered widely in recent investigations. Also, application of low value recycled fibers for high value added products can be of much interest. In this respect, current research has focused on producing hydrogel from recycled old corrugated container (OCC) resources, using 1-butyl-3-methyl-imidazolium chloride ionic liquid (IL) as a green solvent. The results indicated that the IL successfully dissolved OCC fibers, allowing the production of lignocellulosic hydrogel. Considering total water absorption amount as a main criterion for evaluation of hydrogels, the fabricated hydrogel showed promising results (up to 4700% water absorption). X-ray diffraction analysis confirmed

The effect of electerical conductivity on the performance and interaction of cationic starch- anionic nanosilica in pulp slurry

Amir Hossein Mehranfar, Amir Khosravani, Mehdi Rahmaninia
Journal PapersIranian journal of Wood and Paper Science Research , Volume 35 , Issue 1, 2020 January , {Pages 102-112 }

Abstract

Effect of cationic polyDADMAC-based fixing agent on strength properties of OCC pulp

Lajimi A Ahmadi, M AZADFALLAH, Y HAMZEH, M RAHMANINIA
Journal Papers , Volume 10 , Issue 400825, 2020 January 1, {Pages 605-616 }

Abstract

Stickies are one of the main challenges in the papermaking industry, especially in recycling process of old corrugated containers (OCC). Application of a fixing cationic polymer is one of the main approaches to control these harmful substances. However, it is obvious that these agents besides fixing characters could also influence the final product properties. Therefore, in this study, the effect of using an industrial cationic polymer ie GL (Trade name), as a stickies control agent on mechanical properties of hand-sheets made of OCC fibers, was assessed at three levels of 0. 4, 0. 8 and 1. 2%(based on pulp dry weight) and at two pH ranges of 4 and 7. The characterization of the GL by FT-IR spectroscopy demonstrated that it was synthesized

Using Zeolite as a Filler with Chitosan Biopolymer in Papermaking

Mehdi Rahmaninia, Homa Sayadi Milani
Journal PapersIranian Journal of Wood and Paper Industries , Volume 11 , Issue 3, 2020 November 21, {Pages 407-417 }

Abstract

The use of minerals instead of expensive virgin fibers is one of the common ways to reduce production costs in papermaking. But the presence of fillers reduces the mechanical properties of produced papers. In this study, the possibility of using zeolite (an abundant mineral) as a filler along with chitosan biopolymer was investigated. Zeolite was replaced by virgin fibers at three levels of 10, 20 and 30% (based on pulp dry weight). The results showed that the presence of 1% chitosan as an additive in pulp increased the zeolite retention in printing and writing paper. But the presence of chitosan in the paper containing the filler had no effect on the mechanical properties. It seems that with increasing the amount of chitosan, the mechanica

Using Zeolite as a Filler with Chitosan Biopolymer in Papermaking

Homa Sayadi Milani, Mehdi Rahmaninia
Journal PapersIranian journal of wood and paper industries , Volume 11 , Issue 3, 2020 January , {Pages 47-417 }

Abstract

Effect of Chitosan Molecular Weight on the Performance of Chitosan-silica Nanoparticle System in Recycled Pulp

Elmira Amiri, Mehdi Rahmaninia, Amir Khosravani
Journal PapersBioResources , Volume 14 , Issue 4, 2019 January , {Pages 7687-7701 }

Abstract

The application of chitosan biopolymer with and without nanoparticles in the papermaking process was investigated. The effect of the chitosan’s molecular weight on its interaction with silica nanoparticles in recycled old corrugated container pulp was studied. Initially, the nanosilica particles were analyzed via atomic force microscopy and scanning electron microscopy, which confirmed the spherical shape of the silica nanoparticles with diameter less than 5 nm. Dynamic light scattering method was used to determine the zeta potential and the hydrodynamic radius of the chitosan with different molecular weights. Infrared spectroscopy was used to show the possibility of hydrogen bonding between the chitosan and the nanosilica. The results sh

Hydrophobization of paper using organosilane and titanium dioxide nanoparticles applying layer by layer method

B. Ashrafi Rad, M. Azadfallah, F. Kolaei Moakhar, S. Izadyar, M. Rahmaninia
Journal PapersIranian Journal of Wood and Paper Science Research , Volume 32 , Issue 4, 2018 January , {Pages 530-540 }

Abstract

Reduction of formaldehyde emission from medium density fiberboard by chitosan as scavenger

Hedi Hassannejad, Ali Shalbafan, Mehdi Rahmaninia
Journal PapersThe Journal of Adhesion , 2018 January , {Pages }

Abstract

Chitosan was used as environmentally friendly and bio-based scavenger for reducing the formaldehyde emission from medium density fiberboard. Using of chitosan powder showed better capacity of formaldehyde adsorption rather than the chitosan solution. Liquid 13C-NMR showed that the free formaldehyde in urea formaldehyde adhesive having chitosan powder was drastically reduced. Additionally, the observed peak at 155?ppm showed that that the chitosan powder was copolymerized with urea formaldehyde adhesive. Increasing the amount of chitosan powder was significantly reduced the emitted formaldehyde. It was shown that the formaldehyde adsorption of chitosan was strongly influenced by the pH value of adhesive composition. The pH value and the adhe

Potential of GL as cationic polymer to control stickies of OCC pulp

Ali Ahmadi ladjimi, Mohammad Azadfallah, Mehdi Rahmaninia, Yahya Hamzeh
Journal PapersIranian journal of Wood and Paper Science Research (IJWPR) , 2018 January , {Pages }

Abstract

Effect of Chitosan Electrostatic Charge on the Performance of Chitosan-Nanosilica in Recycled Old Corrugated Container Pulp

Elmira Amiri, Mehdi Rahmaninia, Amir Khosravani
Journal PapersIranian journal of wood and paper industries (IJWP) , Volume 9 , Issue 3, 2018 January , {Pages 459-469 }

Abstract

The performance of chitosan with bentonite microparticles as wet-end additive system for paper reinforcement

Mehdi Rahmaninia, Mostafa Rohi, Martin A Hubbe, Seyed Majid Zabihzadeh, Omid Ramezani
Journal PapersCarbohydrate polymers , Volume 179 , 2018 January 1, {Pages 328-332 }

Abstract

In this research, the effect of bentonite micro-particles on the performance of chitosan as a new additive system for improving the dry strengths of acidic papermaking was studied. Chitosan, an abundant carbohydrate biopolymer, in 4 dosages (0, 0.75, 1.25 and 2% based on dry weight of pulp) was applied with bentonite in 4 dosages (0, 0.3, 0.6 and 0.9% based on oven-dry weight of pulp). Although the addition of chitosan up to 0.75% (without bentonite) improved tensile index and burst index, but the addition of more chitosan decreased all mechanical properties in comparison with the control sample. The application of bentonite in combination with chitosan had a significant impact on chitosan performance in mechanical properties. The best resu

Chitosan-based formaldehyde scavenger and applications thereof in wood-based products

Journal Papers , 2018 July 19, {Pages }

Abstract

An adhesive composition is disclosed, and includes an aldehyde-based resin selected from the group consisting of urea-formaldehyde resins, melamine-formaldehyde resins, melamine-urea-formaldehyde resins, phenol-containing resins, and mixtures, combinations, and sub-combinations thereof, and a formaldehyde scavenger selected from the group consisting of chitosan, nano-chitosan, functionalized chitosan, and mixtures, combinations, and sub-combinations thereof.

The potential of GL as a cationic polymer to control the stickies of OCC pulp

Ladjimi A Ahmadi, M AZADFALLAH, M RAHMANINIA, Y HAMZEH
Journal Papers , Volume 33 , Issue 26300538, 2018 January 1, {Pages 256-269 }

Abstract

Stickies are among the major obstacles in paper recycling mills. This substance deposits on paper machine components and initiates break in the paper web as well as loss of end product quality. So, it is necessary to control the stickies and limits its detrimental effects. It is known that cationic polymers as fixing agents can control the stickies efficiently. Therefore, the control of stickies of OCC pulp using a commercial cationic polymer called GL at 0. 4, 0. 8 and 1. 2 percent based on oven dry weight of pulp at pH 4 and pH 5 were investigated. Macro-and micro-stickies, dissolved and colloid substances (DCS), turbidity, and drainage time were measured to evaluate GL efficiency and compared with control sample. The results indicated th

The potential of GL as a cationic polymer to control the stickies of OCC pulp.

AA Ladjimi, M Azadfallah, M Rahmaninia, Y Hamzeh
Journal Papers , , {Pages }

Abstract

The effect of cationic starch degree of substitution on nanoparticle system performance in old corrugated containers recycling

Amir Khosravani, Amir Hossein Mehranfar, Mehdi Rahmaninia
Journal PapersJournal of Forest and Wood Product , Volume 70 , Issue 1, 2017 January , {Pages 147-155 }

Abstract

COMPARING THE EFFECT OF SILICA SOL AND BENTONITE NANOPARTICLES ON THE PERFORMANCE OF CATIONIC STARCH WITH RESPECT TO DRAINAB...

S JAHANSHAHLOU, A KHOSRAVANI, M RAHMANINIA
Journal Papers , Volume 32 , Issue 2, 2017 January 1, {Pages 227-237 }

Abstract

Production of test liner and fluting paper from old corrugated containers is one of the most common paper recycling processes in Iran. This type of papers are among the high basis weight papers and also contain significant fine fibrous and non-fibrous materials. Hence, the drainage and in addition, the retention of fine materials, are the obstacles for the paper mills. In these cases, usually application of drainage/retention aids, such as nanoparticle systems can be of good help. In this respect, colloidal silica and bentonite are the two most commonly used nanoparticles with polyelectrolytes in papermaking wet-end. Therefore, in this research, the effect of bentonite and silica sol nano-particles on the performance of cationic starch was

Effect of thermal accelerated aging of mixed hardwoods CMP paper on mechanical and optical properties of its recycled pulp

Hossein Kermanian, Mehdi Rahmaninia, Omid Ramezani, Maryam Abdi, Narjes Khaton Madahi
Journal PapersJournal of Forest and Wood Product , Volume 69 , Issue 4, 2017 January , {Pages 821-830 }

Abstract

The old newsprint, as an important grade of waste papers, usually has been produced from chemical-mechanical pulp (CMP). Although the effect of paper aging on different properties of recycled pulp has been investigated from long time ago, but, few studies have been observed about the effect of this phenomenon on recycling of CMP paper. In this study, accelerated aging was applied on Hardwood CMP newspaper by 2 levels of temperature (50 and 100 o c) and 2 levels of time (24 and 48 hours). Results showed that accelerated aging applying 100 o c in 24 and 48 hours (about half of a decade and more) impose an intense reduction tensile strength, burst strength and tear strength indices as well as folding endurance strength of recycled pulp. Also,

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دروس نیمسال جاری

  • كارشناسي ارشد
    آزمايشگاه فناوري هاي پيشرفته توليد كاغذ ( واحد)
    دانشکده منابع طبیعی و علوم دریایی، گروه علوم و صنايع چوب و كاغذ
  • كارشناسي ارشد
    فيزيك - مكانيك كاغذ ( واحد)

دروس نیمسال قبل

  • كارشناسي ارشد
    تجهيزات و فناوري هاي باز يافت كاغذ ( واحد)
    دانشکده منابع طبیعی و علوم دریایی، گروه علوم و صنايع چوب و كاغذ
  • 1400
    اميني, فرشيد
    بهبود خواص كاغذهاي بازيافتي حاصل از كارتن هاي كنگره اي كهنه (OCC) با افزودن خميركاغذ سوداي برگ شاخه هاي نخل خرما
  • 1398
    طاهري, زهره
    توليد كاغذهاي تقويت شده با ويژگي هاي ضد باكتري و مقاوم در برابر آتش با استفاده از نانوالياف سلولزي فسفريله شده و كايتوزان به روش لايه نشاني
  • 1399
    كول, فرهاد
    داده ای یافت نشد
  • عضو شورای ایمنی، بهداشت و محیط زیست دانشگاه
  • عضو کمیته ایمنی دانشکده های منابع طبیعی و علوم دریایی
  • عضویت در شورای پژوهشی دانشکده منابع طبیعی
  • عضو شورای تخصصی گروه علوم و صنایع چوب و کاغذ
  • Associate Editor مجله Lignocellulose
  • عضو هیات ممیزه دانشگاه تربیت مدرس
  • عضو کمیسیون هیات ممیزه دانشکده های منابع طبیعی و علوم دریایی
  • معاونت دانشجویی و فرهنگی پردیس منابع طبیعی و علوم دریایی
  • معاونت دانشجویی و فرهنگی پردیس منابع طبیعی و علوم دریایی
  • عضو فرهنگستان علوم ایران

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