“chemical engineering”

ĶPI 504

Assistant Professor Jānis Kajaks

Course description: 2 Credit units; 32 hours ( 32 lectures)

Control forms: test
Course content:

• 
  Groups of perspective polymer materials, specific properties of these materials and utilization fields. Ecological perspective polymers and composites. Natural polymers, wood, cellulose and different another natural vegetable fibres, their processing waste and composites on the basis of NVF and synthetic polymers. Recycled polymer composites. Starch and their derivates. Biodegradable composites on the basis of thermoplastics starch. Microbiological synthesied biodegradable polymers and composites, their utilization, composites with regulated lifetime. Thermal resistance polymers : determinations of synthesis, structure and utilization. Semi-conductor polymers and composites. Ion exchange polymer kinds. Photo sensitive polymers: structure, properties and usage. Thermal shrinkage materials: copolymers, polymer mixtures on the basis of different polymers, properties regulation methods, processing distinguihings, spheres of use and etc.
  

Literature:

1. 
   J. Kajaks, V. Bulmanis, S. Reihmane Influence of coupling agents on physico - mechanical properties of polyethylene and linen yarn^,s production waste composites. - Mechanics of composite materials, vol.33, N 3, 1997. and etc.( vol.33, N4, 1997, vol.35, N2, 1999 ) and etc.
   
2. 
   D.R. Rueda, J. Kajaks, A. Viksne, F.-J. Balta Calleja Properties of arylpolyesters with references to water content. - Macromolec. Symp. 94, 259 -268 (1995 )
   

Teaching literature:

1. 
   Gaismas jūtīgi polimēri / autoru kolektīvs.- L.: Ķīmija, 1985.- 296 l.(in rus)
   
2. 
   Termoelastoplasti / autoru kolektīvs.- M.: Ķīmija, 1985.- 184 l. (in rus.)
   
3. 
   Specialty Polymers, Ed. R. W. Dyson, Chapman and Hall New York , 1987.- 185 p
   
4. 
   K. Bīlers Siltuma un termiski izturīgi polimēri. M.: Ķīmija, 1984. -1056 l. (in rus.)
   
5. 
   V. Kopilovs Polimēri ar pazeminātu degamību. M.:Ķīmija, 1984.-240 l. (in rus.)
   
6. 
   V. Guļs Elektrovadošas polimēru kompozīcijas.-M.:Ķīmija, 1986.- 214.l. (in rus.) u.c.
   

Physical and Chemical Methods of Investigation of Polymers

ĶPI 506

Assistant Professor Velta Tupureina

Course description: 2Credit units; 32 hours (32 lectures)

Control forms: test
Course content:

• 
  General characteristics of investigation methods of polymers. Chemical analysis of polymers. Use of electromagnetic radiation: spectroscopic and non-spectroscopic optical methods. Main optical investigation methods of polymers. Effect of temperature changing on characteristic parameters: thermal effects, changes of free volume, change of weight and deformation. Use of external mechanical forces: strength-deformation characteristics.
  
• 
  Thermal analysis of polymers. Differential thermal analysis and differential scanning calorimetry. Thermogravimetry. Thermomechanics. Dilatometry. Determination of characteristics of individual polymer structure. Structure of polymers: crystallinity, morphology and quality of crystals. Transition temperatures of phase and deformation states of polymers: temperature of crystallization and melting , glass transition temperature, temperature of brittlness and flow temperature.
  
• 
  Investigation of polymer solutions properties. . Average molecular weight, molecular weight distribution. Methods of molecular weight determination: light scattering, viscometry, cryoscopy and ebulliometry, osmometry and end-group analysis. Methods of determination of molecular-weight distribution: turbidimetric titration, size-exclusion chromatography, gel-permeation chromatography, preparative fractionation by dissolution and precipitation.
  
• 
  Determination of density. Method of hydrostatic weighting. Gradient tube method.
  
• 
  Determination of strength-deformation characteristics. Solid and high-elastic polymers: creep, stress relaxation, elasticity modulus. Determination of impact strength and microhardness.
  

Literature:

1. 
   Modern Methods of Polymer Characterization. Ed. by G.Bartgh, J.W.Mays.- N.-Y., Wiley- Intersci.Public., 1991, pp.561.
   
2. 
   L.C.Sawyer, D.T.Grubb. Polymer Microscopy.- N.-Y., Chapman & Hall, 1994, pp.303.
   
3. 
   D.Campbell, J.R.White. Polymer Characterization. Physical Techniques.- N.-Y., Chapman & Hall, 1991, pp.362.
   
4. 
   M.Kalniņš, Polimēru fizikālā ķīmija.- Rīga, Zvaigzne, 1988, 242 lpp.
   
5. 
   Я.Рабек. Экспериментальные методы в химии полимеров.- Москва, Мир,1983, ч.1, 384 с.; ч.2, 479 c.
   
6. 
   L.H.Sperling.Introduction to Physical Polymer Science.-Wiley-Intersci.Public.,1992, pp.594.
   
7. 
   I.M.Ward, D.W.Hadley. An Introduction to the Mechanical Properties of Solid Polymers.- John Wiley&Sones Ltd., 1993, pp. 334.
   

Leather - material science

ĶPĶ 315
Associated Professor Mārcis Dzenis

Course description: 5 Credit units; 80 hours(32 lectures, 16practice, 32laboratories)

Control forms: exam
Course content:

• 
  Structure of skins and hides, variations in structure between animal types and with location. Collagen, elastin, reticulin and keratin fibres, their features and functions in skins and hides.
  
• 
  Classification of proteins, remnant of amino acids, peptide bond, peptides and polypeptides.
  
• 
  Collagen; primary, secondary, ternary and quarterly structures, conditions for their stability; chemical, physical and mechanical properties; changes absorbing water, at heating, acting with alkalis, acids, salts and ferments. Isoelectric point.
  
• 
  Historical development of leather production. Ancient skins and hides, treatment and tanning methods.
  
• 
  Curing methods of skins and hides, their characterisation; preparation for tanning: soaking back, liming, unhairing. Operations before tannage: deliming, bating, pickling, their nature.
  
• 
  General view on tanning process. Organic and inorganic tanning materials. Aldehyde and smoke tannage, white leathers. Oil tannage, chamois and semi-chamois leathers. Complex organic tanning agents, hydrolysable and condensed tannins. Vegetable tannage, red leathers.
  
• 
  Mineral tanning agents. Chrome tannage and leathers. Alum tawing, glace, nap and other fine leathers.
  
• 
  Combination tannage.
  
• 
  Chrome and combination tanned leathers dyeing and fatliquoring processes. Dyeing with different types of dyes. Fatliquoring with natural and sytethic lubricating agents (lubricants).
  
• 
  Finishing with aniline, semi-aniline, casein, synthetic organic solvent and emulsion based systems. Skin, hide and leather defects.
  

Literature:

1. 
   {bvbz b nt[yjkjubz rj;b. Gjl htl. B.G.Cnhf[jdf.- V.% Ktughjv,bnbplfn> 1985.- 496c.
   
2. 
   Pehf,zy R.V. b lh. Vfnthbfkjdtltybt bpltkbq bp rj;b.- V.% Ktughjv,bnbplfn> 1988.- 416 c.
   
3. 
   Ujkjdnttdf F.F. b lh. Kf,jhfnjhysq ghfrnbrev gj [bvbb b nt[yjkjubb rj;b b vt[f.- V.% Ktughjv,bnbplfn> 1987.- 312 c.
   
4. 
   J. H. Sharphouse. Leather Technicians Handbook.- Northampton, Leather Producers Association. 1995.
   
5. 
   Leather. Its Composition and Changes with Time. Edited by C. Calman and B. Hainess.- Northamptonshire, The Leather Conservation Centre, 1991.
   
6. 
   D. Tuck. Oils and Lubricants Used on Leather.
   
7. 
   Stambolow T. Manufacture, deterioration and preservation of leather.- Amsterdam, 1969.- 98 p.
   
8. 
   Reed R. Ancient skins, parchments and leathers.- London-New York, Seminar Press.- 1972.- 325 p.
   

Polymer coatings.

ĶPĶ 424

Associētais Professor Laimonis Mālers

Course description: 3 Credit units; 48 hours ( 32 lectures,16 laboratories)

Control forms: exam
Course content:

• 
  Introduction. General information about polymer coatings. Polymer materials, useful for obtaining of coatings. Classification of coatings.History of coatings.
  
• 
  Physics and chemistry of formation of coatings. Surface and boundary processes during adhesive bonding of polymers with substrates. General characterization of solid surface. Properties of polymers, responsible for formation of coatings. Fundamentals of film formation ( with and without participation of chemical processes, from solutions, dispersions, melts ).
  
• 
  General properties of polymer coatings. Mechanical properties. Adhesion and internal stresses. Permeability and protective properties. Appearance and electrical properties. Physical and thermal properties. Aging of organic coatings. Parameters, having influence on it : temperature, radiation, chemicals. Biological degradation of coatings. Natural aging. Durability of coatings.
  
• 
  Basic application technologies of coating. Technology of coating and drying. Comparative evaluation of different application technologies. Modes of hardening of coatings and their comparative estimation.Technology and ecology of coatings.
  
• 
  Aplication technology for different substrates. Coatings on metals. Coatings for anticorrosive protection of metals. Coatings for non-metalic substrates.Coatings of special meaning.
  

Literature.

1. 
   G. Turner. Introduction to Paint Chemistry and Principles of Paint Technology.Chapman&Hall, 1993.
   
2. 
   Z.W.Wicks, Jr.F.Jones, S.P.Pappas. Organic Coatings: Science and Technology. 1.and 2.part. John Wiley & Sons, 1992.
   
3. 
   Jakovļevs. Laku - krāsu pārklājumu ķīmija un tehnoloģija. Ļ.,Ķīmija,1989 (in russion ).
   
4. 
   S. Bagažkovs, N. Suhanova. Laku un krāsu pārklājumu tehnoloģijas praktikums. Ļ., Ķīmija, 1989 (in russion ).
   
5. 
   Jakovļevs u.c. Pulverveida polimēru materiāli un pārklājumi uz to bāzes.Ļ.,Ķīmija, 1979 (in russion).
   
6. 
   Paint and surface coatings.Theory and practice. Edit.R.Laumburne. Ellis Horwood , 1987 .
   

Pigments and dyes

ĶPĶ 435