Polymer chemistry

Xem 1-20 trên 36 kết quả Polymer chemistry
  • Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of carbon-based compounds, hydrocarbons, and their derivatives. Organic compounds are structurally diverse. The range of application of organic compounds is enormous. They either form the basis of, or are important constituents of, many products including plastics, drugs, petrochemicals, food, explosives, and paints....

    ppt59p loc5heo 07-06-2011 104 40   Download

  • In this chapter, we discuss some of the fundamental principles of polymer chemistry. We begin with a survey of the different kinds of polymers, then consider the reactions used to induce polymerization. Finally, we discuss some of the structural characteristics that determine the physical properties of a polymer.

    ppt32p tangtuy02 11-03-2016 7 2   Download

  • During the last ten to fifteen years the developments in polymer science has been striking attention and undergone important changes. From rather specialized subject intended for engineers interested in certain definite fields, it has developed into one of the fundamental disciplines common to several branches of engineering and science. To serve this purpose, the subject materials have been prepared to treat a comprehensive aspects of polymer science.

    pdf256p phoebe75 19-02-2013 75 36   Download

  • New approaches to tailor-made cellulose/starch/lignin-synthetic polymer graft copolymers with precise control over molecular weight, degree of substitution, backbone-graft linkage, and the overall grafting process are being studied. Cross-linked graft copolymers with exactly defined polymer chain segments between crosslink points have been prepared. The graft copolymers exhibit a two-phase morphology and can function effectively as compatibilizers/interfacial agents to alloy cellulosic and lignocellulosic materials with synthetic polymers.

    pdf198p dontetvui 21-01-2013 35 20   Download

  • Physical chemistry of macromolecules is a course that is frequently offered in the biochemistry curriculum of a college or university. Occasionally, it is also offered in the chemistry curriculum. When it is offered in the biochemistry curriculum, the subject matter is usually limited to biological topics and is identical to biophysical chemistry. When it is offered in the chemistry curriculum, the subject matter is often centered around synthetic polymers and the course is identical to physical polymer chemistry.

    pdf581p krac24 18-04-2013 50 17   Download

  • Since the establishment of the conductive properties of intrinsic conductive polymers, a huge variety of basic and applied research has been carried out, involving different polymers, copolymers, blends, mixtures and composites. Thus, fundamental understanding of physical and chemical properties of these materials has been sought, while the applied aspects have advanced very rapidly, crossing the boundaries between disciplines. Today, the applications of conducting polymers in various fields such as neuroscience, nanotechnology and green chemistry, are easily found.

    pdf220p cucdai_1 16-10-2012 44 16   Download

  • I got the opportunity to associate myself with Dr. Raj Pal Singh, senior scientist, Polymer Chemistry Division, National Chemical Laboratory Pune, as my supervisor. As an outstanding scientist and teacher he has given me the benefit of his guidance throughout the course work. I am grateful to him for showing me all the angles of research life.

    pdf199p dangmya1989 05-05-2011 144 15   Download

  • Polymers are the compounds that includes plastics, artificial fibers, rubber, cellulose, and many other materials, including coatings and adhesives. This book presents key data on approximately 200 important polymers currently in industrial use or under study in industrial or academic research. No other single source covers so many polymers or offers such a depth of data. The book standardized and makes accessible a wealth of essential data for students, teachers, researchers, and other professionals in chemistry and chemical engineering.

    pdf1102p phongluu9x 22-10-2014 46 14   Download

  • Lecture Organic chemistry - Chapter 12: Reactions of alkenes. In this chapter, the following content will be discussed: Addition reactions of alkenes, catalytic hydrogenation, electrophilic additions, hydroboration-oxidation,...and other contents.

    ppt52p tangtuy05 01-04-2016 6 3   Download

  • The feature of polyimides and other heterocyclic polymers are now well-established and used for long term temperature durability in the range of 250 - 350'C. This book will review synthesis, mechanisms, ultimate properties, physico-chemical properties, processing and applications of such high performance materials needed in advanced technologies. It presents interdisciplinary papers on the state of knowledge of each topic under consideration through a combination of overviews and original unpublished research.

    pdf256p crius75 02-01-2013 96 45   Download

  • oncerns with ionic liquids are one of the most interesting and rapidly developing areas in modern physical chemistry, materials science, technologies, and engineering. Increasing attention has also been paid to the use of ionic liquids in the research fields of biological aspects and natural resources. This book provides the forum for dissemination and exchange of up-to-date scientific information on theoretical, generic, and applied areas of ionic liquids.

    pdf0p phoebe75 19-02-2013 31 14   Download

  • Electrochemistry, long-time corner stone for fundamental chemistry and physics, now plays an important role in many areas of applied science and technology. A very broad range of applications of electrochemical principles and technologies is found in materials science. Electrochemical deposition of metals and alloys, formation of oxide films and semi-conductors, corrosion and corrosion protection, new polymer materials that can switch between metallic conductivity and semi-conducting properties, and new applications in fast-evolving nanotechnologies are just some of the examples....

    pdf433p xrzc1-1 16-09-2013 32 13   Download

  • hạn chế. Các tính di động cao của chuỗi PBT và điểm nóng chảy thấp hơn của PET làm cho polymer này dễ dàng hơn để xử lý hơn PET, nó là chủ yếu xử lý bằng cách tiêm ở nhiệt độ PBT thường được trộn lẫn với sợi thủy tinh ngắn,

    pdf56p banhbeo3 06-11-2011 56 10   Download

  • This book is the second in the series of publications in this field by this publisher, and contains a number of latest research developments on ionic liquids (ILs). This promising new area has received a lot of attention during the last 20 years. Readers will find 30 chapters collected in 6 sections on recent applications of ILs in polymer sciences, material chemistry, catalysis, nanotechnology, biotechnology and electrochemical applications.

    pdf0p cucdai_1 20-10-2012 60 9   Download

  • . Tỷ lệ thời gian tồn tại của trầm cảm nặng là 10-25% đối với phụ nữ và đối với nam giới . Lên đến 15% những người có cam kết tự tử lớn trầm cảm. Thời gian tồn tại Các biểu thức tương tự có thể được viết lại như một chức năng của các phân số khối lượng của hai thành phần, với 1 là phần khối lượng của dung môi và 2 của polymer:

    pdf63p banhbeo3 06-11-2011 29 7   Download

  • Không giống như các axit ribonucleic, polyme sợi duy nhất, DNA hình thức doublestrand xoắn, sắp xếp một thang xoắn, bao gồm hai chuỗi bổ sung. Bổ sung Điều này xảy ra thông qua liên kết hydro giữa các phân tử giữa hai cặp cơ sở, giữa adenosine của một sợi và thymidine của người khác, và tương tự giữa cytidine và guanosine.

    pdf63p banhbeo3 06-11-2011 26 7   Download

  • Analysis was conducted on all nutrients or nutrient groups for which numeric data were provided in at least 10 of the 137 crop studies that reported comparisons between organic and conventional crops (see Appendix 10).

    pdf81p ut_hai_can 29-12-2012 23 7   Download

  • The simplest drilling fluid is a dirty mixture of water and clay, often referred to as mud. The drilling fluid in the drilling process can be seen as the equivalent to the blood in the human body, the mud pump is the heart, and the drilled out shale (cuttings) represent the slag products. At the surface, we find the mud cleaning system which corresponds to the kidney and the lungs. In the mud cleaning system the cuttings are removed by means of a sieve, the shale shaker.

    pdf132p sn_buon 29-11-2012 34 4   Download

  • Despite the advances in the development of new drugs, a drug may never reach the target organ, or it may be difficult to achieve the necessary level of drug in the body. Large doses can result in serious side effects, and can harm normal cells and organs as well as diseased cells. Hence controlled release and the targeting of delivery systems must evolve in parallel to drug research.

    pdf174p thienbinh1311 13-12-2012 19 4   Download

  • More than 200 polymers are used for electrospinning like silk fibroin (Zarkoob et al., 2004; Sukigara et al., 2003; Jin et al., 2004), collagen (Mathews et al., 2002), chitosan (Ohkawa et al., 2004), gelatin (Ma et al., 2005) etc. In the field of tissue engineering electrospinning technique is applied for the preparation of nanofiber scaffold design. The process is very versatile in terms of use of polymers, non-invasive and does not require the use of coagulation chemistry or high temperature for fiber generation.

    pdf0p quynho77 13-11-2012 24 3   Download

Đồng bộ tài khoản