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1 e-Polymers 2013, no. 020 http://www.e-polymers.org ISSN 1618-7229 Rheological measurement of molecular weight distribution of polymers Maryam Khak, Ahmad Ramazani S.A.* Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran; fax: (+98) 2166022853; e-mail: ramazani@sharif.edu (Received: 02 November, 2009; published: 30 May, 2013) Abstract: This paper has described a method to obtain the molecular weight distribution (MWD) of polymeric materials from their rheological data. The method has been

1 e-Polymers 2013, no. 020 http://www.e-polymers.org ISSN 1618-7229 Rheological measurement of molecular weight distribution of polymers Maryam Khak, Ahmad Ramazani S.A.* Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran; fax: (+98) 2166022853; e-mail: ramazani@sharif.edu (Received: 02 November, 2009; published: 30 May, 2013) Abstract: This paper has described a method to obtain the molecular weight distribution (MWD) of polymeric materials from their rheological data. The method has been

55 : 645 –651. Effland , M.J. ( 1977 ) Modified procedure to determine acid-insoluble lignin in wood and pulp. Tappi 60 : 143 –144. Ekman , K.H. ( 1965 ) Formaldehyde obtained by alkaline hydrolysis of wood and lignin. Tappi 48 : 398 –402. Evtuguin , D.V., Domingues, P., Amado, F.L., Neto, C.P., Correia A.J.F. ( 1999 ) Electrospray ionization mass spectrometry as a tool for lignin molecular weight and structural characterisation. Holzforschung 53 : 525 –528. Fišerová , M., Šutý, L. ( 1980 ) Comparative studies on milled wood lignins and cellulolytic enzyme

[1] Cheng, Z., & Teoh, S.-H. (2004). Surface modification of ultra thin poly (ɛ-caprolactone) films using acrylic acid and collagen. Biomaterials, 25, 1991–2001. DOI: 10.1016/j.biomaterials.2003.08.038. http://dx.doi.org/10.1016/j.biomaterials.2003.08.038 [2] Fang, L., Leng, Y., & Gao, P. (2005). Processing of hydroxyapatite reinforced ultra-high molecular weight polyethylene for biomedical applications. Biomaterials, 26, 3471–3478. DOI: 10.1016/j.biomaterials.2004.09.022. http://dx.doi.org/10.1016/j.biomaterials.2004.09.022 [3] Fang, L., Leng, Y., & Gao, P

1 Introduction This is the first of four reports from IUPAC Sub-Committee 4.2.1: Structure and Properties of Commercial Polymers , which in 2010 set up a Task Group to evaluate the effectiveness of available methods of quality control (QC) and quality assurance (QA) of ultra-high molecular weight polyethylene (UHMWPE) mouldings and to find improvements where possible. This was seen as an important investigation, because prosthetic hip and knee joints are among the most demanding applications of synthetic polymers and UHMWPE is the polymer of choice for this

approxim ately the size expected from the m olecular weights o f the unm odified proteins p ro ­ duced in in vitro translation experim ents. However, Reprint requests to M. J. Carter. 0341-0382/83/0900-0887 $ 0 1 .3 0 /0 this was not so when the m em brane protein m R N A was considered. Even allowing for a poly-A tail o f 100 residues, these workers derived a predicted molecular weight o f 59 K for the product o f this mRNA. The M protein is produced as a 3 6 -3 7 K molecular weight protein in in vitro translation ex­ perim ents [4 -7 ], and is labelled in

Introduction Enoxaparin sodium is a low-molecular-weight heparin (LMWH) that is used for the prevention and treatment of venous thromboembolism and other thrombotic disorders. It is administered subcutaneously or intravenously once or twice daily, depending on the indication. The most common complication associated with these anticoagulants is bleeding, which can be severe or fatal. The other side-effects include allergic reactions, elevation in liver transaminases, which is usually asymptomatic, and heparin-induced thrombocytopenia (HIT). Adverse cutaneous

1 e-Polymers 2012, no. 035 http://www.e-polymers.org ISSN 1618-7229 Synthesis and characterization of high molecular weight and low dispersity polystyrene homopolymers by RAFT polymerization Cheng Jin, Chun Liu, Bo Jiang, Qin-jian Yin* *College of Chemistry, Sichuan University, Chengdu 610064, China; fax (86)28-85412907; e-mail: changer05@126.com (Received: 27 March, 2010; published: 30 March, 2012) Abstract: High molecular weight polystyrene homopolymers with low dispersity were synthesized by a reversible addition-fragmentation chain

Clin Chem Lab Med 2012;50(4):741–745 © 2012 by Walter de Gruyter • Berlin • Boston. DOI 10.1515/CCLM.2011.832 Measurement of high-molecular-weight adiponectin is not useful in assessing coronary stenosis Takuya Imatoh 1, *, Motonobu Miyazaki 2 , Ken Kadowaki 3 , Shinichi Tanihara 1 , Chinami Akashi 4 and Hiroshi Une 5 1 Faculty of Preventive Medicine and Public Health and , School of Medicine, Fukuoka University, Fukuoka , Japan 2 Saitama City Institute of Health Science and Research , Saitama City Government , Japan 3 The Division

MOLECULAR WEIGHT DISTRIBUTION OF STYRENE POLYMERIZATION IN A STARVED FEED REACTOR Cao Guiping,* Zhu Zhongnan, Lc Huihui, Zhang Minghua and Yuan Wcikang UNILAB Research Center o f Chemical Reaction Engineering, East China University o f Science & Technology, Shanghai, P.R. China 200237 ABSTRACT A starved feed reactor is a semi-batch polymerization reactor where initiator and monomer are fed slowly into a fixed amount of solvent. The polymerization is carried out isothermally at elevated temperatures. Initiator decomposes instantaneously and monomer