flexible thermoplastic polymer due to intermolecular forces in the regular arrangement of carbon chains in their crystalline structure‚ values of mechanical properties of materials in this experiment do not differ largely from published data on polyethylene. From the given data of tensile testing of polyethylene and polystyrene‚ force vs extension graphs were drawn using Microsoft excel and autograph to establish the modulus of elastics‚ tensile strength and behaviour of these polymers under stress. The
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中国组织工程研究与临床康复 第 12 卷 第 19 期 2008–05–06 出版 Journal of Clinical Rehabilitative Tissue Engineering Research May 6‚ 2008 Vol.12‚ No.19 Review Application and research progress of starch in polymer materials★ Wang Zhi-fen‚ Fang Lin‚ Zhang Ke-xi‚ Fu Xin Abstract: Starch a natural polymer that is characterized by cheap‚ regenerative‚ and good biodegradation is generally mixed with low density polyethylene‚ high density polyethylene‚ polypropylene‚ and polystryrene to prepare degradable materials
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References: [1] Numata S‚ Oohara S‚ Fujisaki K‚ Imaizumi J‚ Kinjo N. Thermal expansion behvior of various aromatic polyimides. J Applied Polymer Science 1986;31:101–10. [2] Mascia L. Developments in organic-inorganic polymeric hybrids: ceramers. Trends in Polymer Science 1995;3:61–6. [3] Jou J-H‚ Chen L-J. Simultaneous determination of the biaxial relaxation modulus and thermal expansion coefficient of rigid-rod polyimide films using bending beam techniques
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gas in the presence of a catalyst. They are widely used for pipes‚ containers and packaging. Nonetheless‚ Polyethylene is a polymer made of ethylene. Ethylene has two carbon atoms bonded to each other with a double bond. Polyethylene is the basic component in making bottles‚ bags and fibres. Both polypropylene and polyethylene are thermoplastics polymers. They are linear polymers at which the chains aligned properly giving a range of molecular weights and arrangement of molecules pack together in variety
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Sci Research article Pharm www.scipharm.at Open Open Access Formulation Optimization of Hydrodynamically Balanced Oral Controlled Release Bioadhesive Tablets of Tramadol Hydrochloride Bhupinder SINGH *‚ Ashu RANI‚ BABITA‚ Naveen AHUJA‚ Rishi KAPIL University Institute of Pharmaceutical Sciences‚ UGC Center of Advanced Studies‚ Panjab University 160 014‚ Chandigarh‚ India. * Corresponding author. E-mail: bsbhoop@yahoo.com (B. Singh) Sci Pharm. 2010; 78: 303–323 Published: Accepted:
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MODULE TITLE | (FGDP) Diploma Restorative Dentistry | CANDIDATE NO | 01/13 | TITLE OF ASSIGNMENT | Discuss the range of impression materials available for use in fixed and removable prosthodontics and indicate where you might use each material. | WORD COUNT (excluding front page and references) | | SUBMISSION ✓ | RESUBMISSION | LATE SUBMISSION | NB. late submissions will be marked as a C grade and no higher | Discuss the range of impression materials
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monomer and polymer. M-Monomers are small molecules which may be joined together in a repeating fashion to form more complex molecules called polymers. P- A polymer may be a natural or synthetic macromolecule comprised of repeating units of a smaller molecule. 5. Describe dehydration (condensation) and hydrolysis reaction. Include a diagram to illustrate both 6. What’s the biological relevance of dehydration and hydrolysis reactions ― that is of being able to assemble polymers from monomers
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Synthesizing Polymers “Making Silly Putty” In college‚ there are many things students take for granted. One thing we all take for granted the most is keeping a fresh perspective on the curriculum we are taking. This is an especially hard task when it comes to the more challenging subjects like science and mathematics. Chemistry‚ in particular is one of the most challenging subjects for any student‚ and many factors contribute to the students’ understanding of the course. Things like the right professor
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Nuclear Malaysia have the only nuclear reactor in Malaysia‚ PUSPATI Triga Reactor (RTP). It was first used in 1982. Like other Triga reactor‚ it is used only for research and development‚ training and education. The first location we were taken was a polymer lab. At there‚ we learn about sago starch‚ tensile‚ impact and such more. Sago starch‚ an important agricultural commodity of Malaysia‚ can be radiation modified to improve its functionality‚ diversify its applications and increase value added sago
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Table of Contents Page 1. Introduction 3 2. PROCESSING TECHNIQUES FOR MAKING NANOFIBERS 3 2.1. DRAWING 3 2.2. TEMPLATE SYNTHESIS 4 2.3. PHASE SEPERATION
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