نتایج جستجو برای: polypropylene oxide

تعداد نتایج: 184306  

Journal: :International Journal of Materials Science and Applications 2016

Journal: :Materials & Design 2021

Three novel alkyl sulfone bridged phosphorus (P) compounds namely 6,6′-(sulfonylbis(ethane-2,1-diyl))bis(dibenzo[c,e][1,2]oxaphosphinine 6-oxide) (SEDOPO), sulfonylbis(ethane-2,1-diyl))bis(diphenylphosphine oxide) (SEDPPO), and tetraphenyl (sulfonyl bis(ethane-2,1-diyl)) bis(phosphonate) (SEDPP) (i.e. phosphine oxide, phosphinate phosphonate, respectively) were synthesized via a Michael additio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان 1388

copper extraction from heap 3 low grade ore at sarchechmeh is limited due to its mixed composition (copper oxide and sulphide minerals). changing this heap to a bioheap could improve the copper recovery.

2015
Jia You Xu Jie Liu Kai Dan Li Lei Miao Sakae Tanemura

Polypropylene (PP) is a general-purpose plastic, but some applications are constrained by its high flammability. Thus, flame retardant PP is urgently demanded. In this article, intumescent flame retardant PP (IFRPP) composites with enhanced fire safety were prepared using 1-oxo-4-hydroxymethyl-2,6,7-trioxa-1-phosphabicyclo [2.2.2] octane (PEPA) functionalized graphene oxide (PGO) as synergist. ...

Journal: :Journal of Applied Polymer Science 2022

The aim of this study was to develop temperature and pH-responsive biodegradable 3D printed drug-releasing constructs using the Digital Light Processing (DLP) printing technique. printable molecules, named “inks” throughout study, comprised polyethylene oxide–polypropylene oxide–polyethylene oxide (PEO–PPO–PEO) triblocks acrylic acid (AAc) that rendered them reverse thermo-responsive (RTR) pH-s...

Journal: :Applied Surface Science 2022

Cysteic acid functionalized mineral oxide nanoparticles can be used to impart superhydrophilic performance on a range of woven and non-woven fabrics. Woven fabrics spray dip coated alumina iron based cysteic nanoparticles, were characterized by SEM, EDX the change in water contact angle was measured or where increased hydrophilicity sufficiently great that time for adsorption droplet measured. ...

Journal: :جنگل و فرآورده های چوب 0
منیره ایمانی دانش آموختۀ کارشناسی ارشد، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران علی قاسمیان دانشیار، گروه صنایع خمیر و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، دانشکدۀ مهندسی چوب و کاغذ، گرگان، ایران علیرضا شاکری دانشیار، دانشکدۀ شیمی، پردیس علوم، دانشگاه تهران، تهران، ایران ایمان اکبرپور دانشجوی دکتری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، دانشکدۀ مهندسی چوب و کاغذ، گرگان، ایران

in this research, old magazine (omg) recycled fiber and glass fiber (gf) were mixed at different levels of 10%, 20%, 30% and 40% (based on weight) with two levels of 50% and 60% polypropylene (pp) and then the produced composites evaluated compared to those from net polypropylene. on the basis of obtained results from normalization equations in different treatments done, two treatments has been...

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