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  1. Practise the pronunciation of the words. Make sure you remember their meanings.

Polymerization[pq,lImqraIzeISqn], thereby[,Deq`baI], monomer [`mPnqmq], biopolymer [,baIqV`pPlImq], polyethelene [,pOlI`eTIlJn], polyvinylchloride, PVC [,pPlI`vaInIl`klLraId, pJVJsJ], copolymer [kqV`pPlImq], whereas [weq`rxz], formaldehyde [fL`mxldIhaId], aldehyde [`xldI,haId].

  1. Translate the following words and word combinations into Russian:

Thereby, source compound, exhibit long-range elasticity; degree of brunching, melting temperature, irrespective of; with respect to, degree of clustering, heat resistance, straightforward polymerization, radical reactions, conversely, due to, somewhat, whereas.

  1. Choose the proper English equivalents from the right column.

    1. гибкие материалы;

    2. твердые материалы;

    3. материалы с низким модулем упругости;

    4. термопластики;

    5. термореактивные пластики;

    6. термоэластопласты;

    7. прочность на растяжение;

    8. прочность на истирание;

    9. рабочая температура;

    10. температура стеклования;

    11. термостойкость.

      1. thermoplastic elastomers;

      2. rigid materials;

      3. thermosetting plastics;

      4. tensile strength;

      5. abrasion resistance;

      6. low modulus materials;

      7. heat resistance;

      8. flexible materials;

      9. thermoplastics;

      10. glass transition temperature;

      11. service temperature.

  2. Read the text, find the following parts of the sentences and translate them into Russian. Define the grammatical forms of the underlined words.

Capable of attaching themselves; artificially manufactured; naturally occurring;

fine tuned; reacting compounds; when undergoing radical reactions; compounds being referred to.

  1. Fill in the gaps with the words given. Be attentive: some words are odd.

Transparency, carbon, biopolymers, chemical characteristics, synthetic polymers, thermal properties, specific use, thermoplastics, thermosetting plastics, tetramers, physical characteristics, ring cyclic structures, tensile strength, monomer, crosslinks, crystallinity, final composition, tacticity, homopolymer, polyethylene, heteropolymer, simple aldehydes, trimers, polyvinyl chloride (PVC), formaldehyde hydrates, singular polymers , oligomers.

  1. … is a source compound for forming chains or networks of polymers.

  2. … are those artificially manufactured and are referred to as industrial polymers.

  3. Plastics can be classified into and .

  4. … of synthetic polymers are fine tuned for their specific use. They are as follows: hardness, density, mechanical or , abrasion resistance, heat resistance, , colour, etc.

  5. … of a polymer are its glass transition temperature and melting temperature.

  6. … is created by adding secondary components to a … .

  7. Polymers such as and are formed through relatively simple radical reactions.

  8. Trimers are formed through self-polymerization at quite low temperatures of or … .

  9. … are formed through cyclizing of 3 monomer units reffered to as .

  10. ... are 4 monomer-unit compounds formed out of compounds with molecules consisting of 3 monomer units.