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This research describes the synthesis new Homo polymers and new copolymers based on synthesis of Oximes as monomers which can synthesized fromthe reaction of (p-Hydroxyacetophenone , and p-Nitroacetophenone), withHydroxylamine hydrochloride in presence of NaOH, The Homo polymer wassynthesized from the reaction of oxime with each others and formaldehyde inpresence of HCl as catalyst,While the co-polymers were prepared from thereaction of oxime with other monomers such as (Toluen sulphonic acid , 2,4-Dichloro benzoic acid) and formaldehyde in presence of HCl as catalyst,Thesepolymers were identified by FT-IR and 1HNMR spectroscopy, Theantibacterial,antifungal and antiyeast activities of the synthesized polymers were alsoscreened on various bacteria ,fungal and yeast .All the prepared polymers showexcellent antimicrobial activities as compared to the standard ciprofloxacin andamphotericin –B drugs.
antimicrobile --- Polymers --- biodegeradable --- Polymers --- antimicrobile --- biodegeradable
Many trials were made to prepare Tinidazole 2% as bioadhesive vaginal gels using different gel bases including hydroxypropyl methyl cellulose (3 and 4% w/w), methylcellulose (3 and 4%w/w) and carboxymethylcellulose (2 and 3% w/w) .Swelling index of the polymers,pH , viscosity , bioadhesive force , and in-vitro drug release to the simulating vaginal fluid (S.V.F.) were investigated for all the prepared bioadhesive gels . The mechanism of drug release from the gel bases was also investigated.
The results revealed that C MC 3% gave the highest viscosity and bioadhesive strength with the lowest release rate while lowest viscosity and bioadhesive force was obtained with HPMC gel base with the highest release rate. The mechanism of drug release was affected by the type of gel base. Fickian diffusion was obtained with all gel bases.
تيندازول 2% حضر على شكل هلام مهبلي مخاطي الالتصاق باستخدام قواعد هلامية مختلفة تشمل هيدروكسي بروبيل مثيل سيليلوز ,المثيل سيليلوز والكاربوكسي مثيل سيليلوزوالتي تم قياس نسبة الانتفاخ لها. كما تم قياس الاس الهيدروجيني واللزوجة وقوة الالتصاق وتحرر الدواء من التراكيب ا لهلامية المحضرة في الوسط المشابه للمحيط المهبلي باس هيدروجيني 4.2 .وقد اظهرت النتائج ان تحرر الدواء يتاثر بنوع وتركيز البوليمر المستخدم ,وأن 3% كاربوكسي مثيل سيليلوز اعطى اعلى لزوجة واعلى التصاق واعلى نسبة انتفاخ وابطا تحرر. اما الهايدروكسي بروبيل مثيل سيليلوز فقد اعطى اعلى تحرر للدواء ولم يعطي اى نسبة انتفاخ في التركيز المستخدم .
Tinidazole --- bioadhesive polymers --- gels
Recent progress made in the field of electroluminescent (EL) polymers is reviewed in this paper. Polymer electroluminescence is an area of growing interest due to its appeal in a scientific sense and for its potential in applications for low-cost, easily constructible light emitting diodes (LEDs) and in large flat displays. A brief overview of device construction is presented followed by a review of new developments in methods for fabrication and synthesis of EL polymer devices. Characteristics of EL polymer devices are considered with the mechanisms used to generate them.
Electroluminescent --- Polymers --- LED --- Microfabrication
Three novel polyacetylenes :Polyacetylene PAs, 1-ether- benzoic acid-2- ene - propylene (A) .Polydiacetylene (PDAs), hexa -1,6 diphthalmide - 2- ene – 4 –yne ( B ) ,andPolyacetylene PAs , 1- phenyl - 3- butyne -1 -ol ( C) .were prepared through polymerization of three Acetylinic monomers. They were prepared bybyreaction of propargyl bromide, unsaturated alkyl halide RX and With, other various reagents))Polymerization was carried out by using selective catalyst such as CuCl, PdCl2 complexed oftransition metals with dry and pure oxygen . polymers were extracted , purified and identified by FTIR,HNMR Spectroscopy and melting points . Electrical conductivity of polymers was studied afterdoping with iodine (I2) to increase their conductivities . Composite plastic was prepared frompolymethyl metha acrylate PMMA as the matrix with Polyacetylene as the filler by cast molding thesolution of plastic and polyacetylene was prepared by mixing with THF as solvent. The conductivitiesof the composite seem to be close to semiconductors and the results are in agreement with the literature
تم في هذا البحث تحضیر ثلاث بولیم ا رت أستلینیة جدیدة هي :-Polyacetylene PAs, 1-ether- benzoic acid-2- ene - propylene (A) .Polydiacetylene (PDAs), hexa -1,6 diphthalmide- 2- ene – 4 –yne. ( B ) .Polyacetylene PAs , 1- phenyl - 3- butyne -1 -ol, ( C) .من بلمرة ثلاث مونوم ا رت أستلینیة تم تحضیرها من تفاعل برومید البروبارجیل مع جزیئات مختلفة. أجریت عملیات البلمرة بأستخدامو FT-IR وشخصت البولیم ا رت بمطیافیة . CuCl ، PdCl عوامل مساعدة انتقائیة هي أملاح العناصر الأنتقالیة مثل 2لزیادة قابلیة التوصیل الكهربائي. (I ودرجة الأنصهار.وأجریت د ا رسة التوصیل الكهربائي للبولیم ا رت بعد تشویبها بالیود ( 2 ، HNMRوكانت قیم التوصیلیة المحسوبة .PMMA وحضرت مت ا ركبات من البولیم ا رت الأستلینیة المحملة على البولي میثایل میثا أكریلیتمقاربة لأشباه الموصلات. والنتائج متفقة مع الأدبیات والأفت ا رظات النظریة .
Polyacetylene --- conductive polymers --- composite --- Doping
Five additives were used as flame retardants for epoxy and unsaturated polyester resins which are: Tetraethyl ammonium bromodichloro phenyl phosphonate, (C2H5)4N[PhPCl2Br] (I), Ammonium phosphate (II), Borax (III), Chlorinated paraffine (IV) and a mixture of additives (I+IV) in the mole ratio (1:1) (V) to study their synergetic effect. The compounds, tetraethyl ammonium bromodichloro phenyl antimonate (C2H5)4N[PhSbCl2Br] and tetraethyl ammonium chlorodibromo phenylantimonate(C2H5)4N[PhSbBr2Cl] were used as flame retardantsfor polyethylene (Low density and high density ) and polypropylene. These additives were used in different percentages(0-10%) and the samples of polymers were prepared in the dimensions of (3×130×130)mm. Three standard test methods (ASTM) were used to measure the limiting oxygen index (LOI), rate of burning (RB) and maximum height of flame (H). the results showed that all of these additives exhibit sufficient flame retardants and some percentage caused non burning of the polymers under study.
استخدمت خمسة مضافات لتثبيط لهوبية راتنجي الايبوكسي والبولي استر غير المشبع وهي : رباعي اثيل امونيوم برومو ثنائي كلورو فنيل فوسفونيت (I) (C2H5)4N [PhPCl2Br] فوسفات الامونيوم (II)، البوراكس (III)، البارافين المكلور (IV) ومزيج من المضافين (IV+I) بنسبة مولية (1:1)(V) لدراسة فعلهما التازري. استخدم المركبان رباعي اثيل امونيوم برومو ثنائي كلوروفنيل انتيمونيت] (C2H5)4N [PhSbCl2Brورباعي اثيل امونيوم كلورو ثنائي بروموفنيل انتمونيت(C2H5)4N[PhSbBr2Cl] لتثبيط لهوبية البولي اثلين (واطئ الكثافة وعالي الكثافة) والبولي بروبلين. استخدمت هذه المضافات بنسب وزنية مختلفة (0-10 %) وزناً وتم تحضير النماذج البوليمرية بابعاد (3* 130 * 130) ملم. استخدمت ثلاث طرائق قياسية للفحص (ASTM) لقياس معامل الاوكسجين المحدد (LOI)، معدل الاحتراق (RB) واقصى ارتفاع للهب (H) بينت النتائج بان جميع هذه المضافات اظهرت كفاءة في تثبيط اللهوبية وقسم من النسب تسببت في عدم اشتعال البوليمرات قيد الدراسة.
To solve different problems related to the radiation stability of polymeric articles and purposeful radiation-induced modifications of polymeric materials, the effect of low dose of gamma irradiation on some mechanical properties, at room temperature and in the presence of oxygen, on blends of high density polyethylene (HDPE) and high impact polystyrene (HIPS) has been studied. Thermal – mechanical mixing was used to prepare binary polymeric blends from (HDPE / HIPS) with different compositional ratios, i.e. (100/0, 90/10, 80/20) using single screw extruder. The exposure of these blends to dose of Cs-137 gamma radiation at 0.2 kGy improves the mechanical properties. Scanning electron microscopy (SEM) has been used to investigate the effect of gamma irradiation on the surface morphology of the polymer material. It is noticed that after the radiation treatment; tensile strength, modulus of elasticity and hardness of used (HDPE/HIPS) at all blends ratio have been increased due to partial cross linking.
لحل المشاكل المختلفة المرتبطة باستقرارية المواد البوليمرية عند تعرضها الى الاشعاع والحث على تطوير خصائص المواد البوليمرية باستخدام الاشعاع ،تمت دراسة تأثير جرعة قليلة من اشعة كاما على بعض الخصائص الميكانيكة لخلائط من البولي اثيلين العالي الكثافة HDPE والبولي ستايرين عالي الصدمة HIPS .ولقد تم تحضير خليط (HDPE/HIPS) بنسب وزنية مختلفة تشمل (0/100)،(10/90)و(20/80) باستخدام ماكنة البثق احادية اللولب و تعريضها الى جرعة مقدارها 0.2 KGY من اشعة كاما المنبعثة من المصدر CS-137.وكما تم استخدم المجهر الالكتروني الماسح لتشخيص التاثير الحاصل في طوباغرافية سطح المادة البوليمرية المستخدمة نتيجة تعرضها للاشعاع حيث ان بعد التشعيع اظهرت النتائج العملية ان مقاومة الشد ، معامل المرونة والصلادة لجميع النماذج المستخدمة ازدادت ولكل نسب الخلط المستخدمة وذلك نتيجة التشعيع تميل الى تشكيل روابط عرضية بين السلاسل ثؤثر على خصائصها الميكانيكية.
The intrinsic viscosity has been studied forseveral polymers which are used in someindustrial applications, such as polyisobutylene oftypes Oppanol B150, 200, and 250 with differentmolecular weights of 2.5, 4.1 and 5.9 milliong/mole, respectively, which dissolved in crudeand gas oil. In addition three types of additivesbrought from Al-Dura refinery, olefin copolymer(OCP), {viscoples-4-677, viscoplex-215496, andLubrizol R 7077} which dissolved in crude oil,and the polymers which is soluble in water suchas polyacrylamide with high molecular weightand xanthan gum with molecular weight 3.7million g/mole where also studied. It was foundthat the intrinsic viscosity of polyisobutylenedecrease as the temperature increase in crude andgas oil. The olefin copolymer (Viscoplex-4-677)showed the same behavior as polyisobutylenewhere it can be used as drag reduction agent. Itwas noted that neutral polymers as well aspolyelectrolytes could be used as drag reductionagent.
Intrinsic viscosity --- Neutral polymers --- Polyelectrolyte
In this research, new condensed polymers (A1-A8) were prepared by poly condensation between 1, 2-cyclohexyl diamine tetraacetic acid CDTA with different diamines such as 1, 6-Diamino hexane, Melamine, 3,3-,5,5--Tetramethyl benzidine, Benzidine and Cystine. These prepared chelate polymers could be used to remove heavy metals and toxic metal ions in many industrial processes as well as acting as sequestrate for metal ions. The all prepared polymers were characterized by 1H-NMR and FT-IR spectra. The thermal analyses (TGA, DSC) were studied, the intrinsic viscosities were calculated at 30 ˚C using Ostwald viscometer, and all physical properties were measured.
Polymer coatings like Teflon are an established technology, and generally adhere well to many types of products. Yet the way that the coatings are applied and cured can limit their utility in some applications.
Polymers --- Coatings --- Automotive applications --- Adhesion
This search include preparation of polyamids Containing some of the medical drugs, by the polycondensathion method for amino-1,3,4-thiadiazole compounds with dicarboxylic acids (terephthalic acid and phthalic acid) in presence of triphenyl phosphite and by using domestic microwave oven. Electrical conductivity were determined by using electrical conductivity cell unit.The prepared compounds were characterized by UV/Vis (Ultraviolet/visible), IR (Infra-red) and 1H-NMR (Proton nuclear magnetic resonance) spectra in (d6-DMSO) Solvent ,in addition to using elemental analyses apparatus (C.H.N) for some prepared compounds.
تضمن هذا البحث تحضير بوليمرات الامايدات الحاوية على بعض العقاقير الطبية بطريقة التكاثف المتعدد لمركبات الامينو ثايادايازول الحاوية على العقاقير الطبية مع الحوامض ثنائية الكاربوكسيل (حامض التيرفثاليك وحامض الفثاليك) وبوجود ثلاثي فنيل فوسفيت (TPP) وباستخدام فرن المايكرويف, وتم قياس التوصيلية الكهربائية لهذه البوليمرات المحضرة باستخدام وحدة خلية التوصيل الكهربائي المصنعة محليا. شخصت المركبات المحضرة باستخدام التقنيات الطيفية طيف الأشعة فوق البنفسجية والمرئية (UV/Vis) وطيـــف الأشـــــعة تحـــت الحمـــراء (IR) وطيـــف الرنين النووي المغناطيســـي للبروتون 1H-NMR وباســـــتخدام مذيــــب (d6-DMSO), وتحليل العناصر (C.H.N) لبعض المركبات المحضرة.
: polyamides --- synthesis --- Thiadiazole polymers --- swelling
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