- Economical. Mechanical properties of polymers are much dependent on time Dr. M. Medraj MECH 221 Lecture 21/14 Viscoelasticity If you make a ball of a silly putty, and set it on plate, it flattens out by ... Microsoft PowerPoint - lecture 21-polymers 3-students 2017.ppt [Compatibility Mode] Techniques of polymerization: Bulk, emulsion, solution and suspension. The objective of this chapter is to classification of biodegradable polymers. The corn that If a polymer becomes a melt, there is usually a range of as much as 50 C over which the viscosity of the polymer slowly changes from that of a solid to that of a liquid. Natural rubber is a completely amorphous polymer. Polymers are also known as plastics. Modelling extension activities suggested for kinaesthetic learners. Both amorphous and crystalline areas in same polymer. PRESENTED BY Inter-polymer forces: There are some polymers that have weak forces between their chains, and others that have strong forces. A long molecule made up from lots of small molecules called PPT … 1. professor joe greene csu, chico. Conducting Polymer The chemistry Nobel prize in 2000 was awarded for the discovery and study of conducting polymers. Slime has properties of both solids and liquids. Thermal Properties of Polymers - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. polymer crystallinity based on changes in volume. Physical properties of polymers include molecular weight, molar volume, density, degree of polymerization, crystallinity of material, and so on. Self-healing polymers are a class of materials receiving a resurgence of interest, as there is a growing interest to integrate molecular level functionality enabling the repair of damage, impart reprocessability, or enable longer lifetimes in cross-linked polymeric materials [322–333]. Polymerization 3.