J. Mohammadi Roshandeh
Caspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshar, Guilan, Iran
[ 1 ] - Investigation of optimal condition for Chlorella vulgaris microalgae growth
Due to its abundance and also flexibility of cultivation conditions, Chlorella vulgaris microalgae is one of the most ideal options available in order to production of microalgae based biodiesel. Since vulgaris cultivation for fuel production needs economic considerations to be taken, and in first place providing biomass and lipid production costs is important, wide researches have bee...
[ 2 ] - Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw
The wheat straw as abundant lignocellulosic resource was successfully undergone in a benzylation reaction and plasticized with different contents (2.5, 3, 5 and 7 wt. %) of glycerol and stearic acid.The effect of type and concentration of plasticizers on the mechanical, thermomechanical, morphological and water absorption properties of Benzylated Wheat Straw (BWS) was investigated ...
[ 3 ] - Synthesis and Thermal Properties of Novel Biodegradable ABCBA Pentablock Copolymers from Poly (Ethylene glycol), L-Lactide and p-Dioxanone
In this work, new biodegradable ABCBA type pentablock copolymers with different mole ratio of L-lactide and PPDO-b-PEG-b-PPDO triblock copolymer were synthesized and characterized. In the first step, PPDO-b-PEG-b-PPDO triblock copolymer was synthesized via a ring-opening polymerization of P-DiOxanone (PDO) monomer with Poly (Ethylene Glycol) (P...
[ 4 ] - Effect of Alkyl Substituents on the Hydrogen Catalytic Osmylation of Cis and Trans 2-Cyclohexene-Cyclohexanol
Catalytic osmylation of cis and trans 2-cyclohexene-cyclohexanol (1a) and (1b) are carried out in the presence of N-methyl morpholine-N-oxide. Under the same conditions, only the cis isomer reacted, leading to triol (3). The steric hindrance of the equatorial OH group probably prevents the trans isomer from entering into such reaction. Triol (3) was also obtained from the reduction of the d...
[ 5 ] - Thermal-oxidative Degradation of PGA, PLLA, and Random Binary PLLA-PGA Copolymers
Dimerization process is essential for producing copolymers. The features of dimerization process like thermal-oxidative degradation should be well known to reach maximum efficiency and a superior reactor design. Also, the degradation mechanism of biodegradable polymers is important during sterilization processes. Thermal-oxidative degradation of PGA, PLLA, and their binary copolymers was invest...
[ 6 ] - مطالعه سینتیک لیگنین زدایی ساقه گندم در فرایند خمیر کاغذسازی با گلیسرول
در این مطالعه سینتیک لیگنین زدایی فرایند خمیر کاغذ سازی از ساقه گندم با استفاده از گلیسرول،در شرایط استفاده از کاتالیست سدیم هیدروکسید 2% و بـدون آن، در دمای °C200 و در زمان هـای 30 تا 180 دقیقه درشرایط رفلاکس انجام شد. نتیجه های به دست آمده نشان می دهد که با افزایش زمان خمیر کاغذ سازی مقدار لیگنین باقیمانده در خمیـرکاغذ، درصد کربو هیدرات و بازده در ...
[ 7 ] - بنزیله کردن پوسته شلتوک برنج و بررسی ویژگی های مکانیکی کامپوزیت های به دست آمده از آن با پلی استایرن و پلی کاپرولاکتون
در مرحله اول این پژوهش، پوسته شلتوک برنج (Rice Husk) به عنوان یک ماده ارزان قیمت و طبیعی تحت واکنش بنزیله شدن قرار گرفت و برای اطمینان از انجام واکنش، از نمونه بنزیله شده طیف فروسرخ تبدیل فوریه (FT-IR)) گرفته شد. پیک‌های ظاهر شده در این طیف نشان داد که گروه‌های بنزیل به طور موفقیت آمیزی با گروه های هیدروکسیل پوسته شلتوک برنج واکنش داده است. بررسی ویژگی‌های گرمایی نمونه بنزیله شده با استفا...
[ 8 ] - The effects of glucose, nitrate, and pH on cultivation of Chlorella sp. Microalgae
BACKGROUND AND OBJECTIVES: Bioenergy is a phenomenon that has attracted humans’ attention for about a century. The desirable biological properties of chlorella sp.microalgae have turned it to one of the most ideal options for the production of biodiesel. However, the economic issues must be taken into account in its industrial scale production. The present study aims t...
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