wyszukanych pozycji: 20
Photostabilization of PVC: Principles and Applications
ISBN: 9783659302077 / Angielski / Miękka / 2012 / 80 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. The low cost and excellent performance of poly(vinyl chloride) (PVC) make it a very attractive and suitable plastic for a wide variety of applications. With respect to the production and consumption of synthetic materials, it stands third in the world after polyethylene and polypropylene. However, PVC suffers from poor thermal and light stability. It undergoes rapid autocatalytic dehydrochlorination upon exposure to heat and light during its molding and use, respectively. As a result, conjugated polyene sequences are formed from the beginning of the reaction, and they give rise to...
The low cost and excellent performance of poly(vinyl chloride) (PVC) make it a very attractive and suitable plastic for a wide variety of applications...
|
|
cena:
239,60 zł |
Development of Hazardness Index at Urban Uncontrolled Intersections
ISBN: 9783639263800 / Angielski / Miękka / 2010 / 176 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. Historically, highway safety agencies in developed countries have relied heavily on reported traffic accidents to identify problem locations. Most highway safety professionals, however, recognize the shortcomings of relying on accidents as the sole criterion. The most important shortcoming occurs when there is no reliable accident data, which are identified by accurate accident locations. Thus the primary objective of this book is to develop a model when hazardous urban uncontrolled intersections can be identified by use of an indicator, which depends on the geometric and traffic feature of...
Historically, highway safety agencies in developed countries have relied heavily on reported traffic accidents to identify problem locations. Most hig...
|
|
cena:
332,50 zł |
Hypertension et maladies apparent?es
ISBN: 9786207342716 / Francuski Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
209,69 zł |
Bluthochdruck und verwandte Krankheiten
ISBN: 9786207342679 / Niemiecki Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
209,69 zł |
Hipertens?o e doen?as relacionadas
ISBN: 9786207342709 / Portugalski Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
209,69 zł |
Ipertensione e malattie correlate
ISBN: 9786207342693 / Włoski Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
209,69 zł |
New Trends in the Photochemistry of Polymers
ISBN: 9783639861709 / Angielski / Miękka / 2015 / 80 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. Polymer science is, of course, driven by the desire to produce new materials for new applications. The success of materials suchas polyethylene, polypropylene, poly(vinyl chloride) and polystyrene is such that these materials are manufactured on a huge scaleand are indeed ubiquitous.It is widely recognized that ultraviolet rays in sunlight (wavelengths between 280 nm and 400 nm) is an important factorcausing photodegradation to some organic substances such as polymers.UV radiation causes photooxidative degradation which results in breaking of the polymer chains, produces free radical and...
Polymer science is, of course, driven by the desire to produce new materials for new applications. The success of materials suchas polyethylene, polyp...
|
|
cena:
224,44 zł |
Free radical Polymerization
ISBN: 9783659483851 / Angielski / Miękka / 2013 / 60 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
195,09 zł |
Laboratory Course in General Chemistry
ISBN: 9786200070302 / Angielski / Miękka / 2019 / 60 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
107,08 zł |
New Stabilizers for PVC Based on Benzothiazole Complexes
ISBN: 9783844323580 / Angielski / Miękka / 2011 / 76 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. The work described in this thesis, potasium-2-amino acetate benzothiazole chelate complexes were prepared. Infrared, ultraviolet-visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption conductivity measurement and other physical properties were used to characterize the free ligand and the above chelate complexes. All these compounds were act as stabilizer in PVC films. The rate of photodegradation and photostabilization of PVC film were monitored by measuring the carbonyl, polyene and hydroxyl indices (Ico, Ipo and IoH) values as afunction with irradiation time...
The work described in this thesis, potasium-2-amino acetate benzothiazole chelate complexes were prepared. Infrared, ultraviolet-visible, spectrophot...
|
|
cena:
239,60 zł |
Synthesis of Environmentally Friendly Biolubricant Basestocks
ISBN: 9783639338706 / Angielski / Miękka / 2011 / 80 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. Plant oils and fats are important constituents of human and animal foodstuffs. Certain grades are industrially used and, together with carbohydrates and proteins, are important renewable resources compared to fossil and mineral raw materials, whose occurrence is finite. In concepts for new products, the price, performance, and product safety criteria are equally important and have a correspondingly high importance right at the start of product development. To ensure a high degree of product safety for consumers and the environment, renewable resources have often been shown to have advantages...
Plant oils and fats are important constituents of human and animal foodstuffs. Certain grades are industrially used and, together with carbohydrates a...
|
|
cena:
239,60 zł |
Photolysis of Tris(ethylxanthato) Chromium (III) complex in DMSO
ISBN: 9783844331714 / Angielski / Miękka / 2011 / 92 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. In the present work we prepared tris(alkylxanthato)chromium(III) and intended to study the photochemistry of these complexes in dimethyl sulfoxide. These complexes might be useful in many applications. Moreover, metal chelate with metals at high oxidation state is active in the enhancement of photodegradation of plastic and therefore, might serve as photocatalyst to treat the plastic waste pollution problem. The effect of number of methyl group in these complexes has been also studied. This work also deals with the photochemical reaction and determination of quantum yields and reactivity...
In the present work we prepared tris(alkylxanthato)chromium(III) and intended to study the photochemistry of these complexes in dimethyl sulfoxide. Th...
|
|
cena:
239,60 zł |
Synthesis and Study of Mixed Ligand Complexes
ISBN: 9783639356908 / Angielski / Miękka / 2011 / 60 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. The aim of this work is to prepare a series of mixed ligand complexes of Pd(II) and Cu(II) based on the cyclic dithiarine derivatives using different nitrogen , phosphorous and arsine containing ligands, and to study structure and bonding aspects of these new different complexes , using the suitable techniques.The chosen metal ions and the ligands are both scientific and pharmaceutical importance. The work is to be accomplished through the following steps: 1.Preparation of dithiarine ligand starting from dithiooxamide. 2.Preparation of Pd(DMSO)2Cl2 as astarting material. 3.Preparation of...
The aim of this work is to prepare a series of mixed ligand complexes of Pd(II) and Cu(II) based on the cyclic dithiarine derivatives using different ...
|
|
cena:
239,60 zł |
Photostability of Poly(vinyl Chloride)
ISBN: 9783639365108 / Angielski / Miękka / 2011 / 72 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. Poly(vinyl chloride) is second only to polyethylene among five kinds of general plastic materials, which was widely used in the industries including architecture, electronic, chemical engineering, packaging, transportation, etc.However, low photostability of PVC leads to hydrogen chloride loss,discoloration, and finally serious corrosion phenomena,accompanied by changes of physical and chemical properties of PVC. The low cost and the good performance of poly(vinyl chloride) products have increased the utilizationof this polymer in building, mainly in exterior application, such as window...
Poly(vinyl chloride) is second only to polyethylene among five kinds of general plastic materials, which was widely used in the industries including a...
|
|
cena:
239,60 zł |
Preparation and characterization of new HPLC stationary phase
ISBN: 9783659129209 / Angielski / Miękka / 2012 / 52 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
239,60 zł |
New Organic Photo-Stabilizers for Rigid PVC Against Photodegradation
ISBN: 9783659118500 / Angielski / Miękka / 2012 / 200 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. Poly(vinyl chloride), better known by its abbreviation PVC, is one of the most versatile plastics. It is the second largest manufactured resin by volume worldwide; currently, its production per annum exceeds 31 million tons. research and industrial applications, with respect to polymerization, stabilization, bulk property modification, and chemical and material recycling of PVC waste. The low cost and the good performance of poly(vinyl chloride) products have increased the utilization of this polymer in building, mainly in exterior application, such as window profiles, cladding structure and...
Poly(vinyl chloride), better known by its abbreviation PVC, is one of the most versatile plastics. It is the second largest manufactured resin by volu...
|
|
cena:
332,50 zł |
Polymer Photophysics and Photochemistry
ISBN: 9786139429172 / Angielski / Miękka / 2019 / 60 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
107,08 zł |
Removable Study of Some Phenols and Acids Compounds
ISBN: 9783845474441 / Angielski / Miękka / 2012 / 92 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. |
|
cena:
239,60 zł |
Photostabilization of Polystyrene Films
ISBN: 9783659121371 / Angielski / Miękka / 2014 / 140 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. Five transition metal complexes of Ni(II), Cu(II), Zn(II), Cd(II) and Sn(II) with {4-amino-5-(pyridyl)-4H-1,2,4-triazole-3-thiol}, as a ligand (L) has been prepared in alcoholic medium.The photostabilization activity of these compounds was determined by monitoring the carbonyl and hydroxylindexes, weight loss method with irradiation time. It was found that these indexes values increased with irradiation time and this increase depend on the type of additives. The surface morphology for these films was studied during irradiation time. The changes in viscosity average molecular weight of PS with...
Five transition metal complexes of Ni(II), Cu(II), Zn(II), Cd(II) and Sn(II) with {4-amino-5-(pyridyl)-4H-1,2,4-triazole-3-thiol}, as a ligand (L) has...
|
|
cena:
302,67 zł |
Photochemistry
ISBN: 9783659513008 / Angielski / Miękka / 2014 / 88 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych. This work was made to study the photochemistry of riboflavin and the kinetics of riboflavin degradation after exposure to UV-Vis light phosphate buffer solution at different pH interval (2-10) with the same concentration (5x10-5M ) was studied by the of UV-Vis spectrophotoscopy analyses, it showed that degradation increase as pH increase from pH (2-7)where the lumichrome a photoderivative forms in the acidic medium. a maximum degradation occurs at neutral pH (7). Then it began to decrease from pH (7-10). Where the lumiflavine (a photoderivative occurs at basic media) formed. We also...
This work was made to study the photochemistry of riboflavin and the kinetics of riboflavin degradation after exposure to UV-Vis light phosphate buffe...
|
|
cena:
195,09 zł |