Studies in Finishing Effects of Clay Mineral in Polymers and Synthetic Fibers

Table 4

Clay mineral effects on filament fibers and fabric.

S. no.	Composite	Method	Performance effects
1	Clay mineral (nm) polypropylene	Melt compounding propylene in twin-screw extruder	(i) Increased filament modulus; (ii) Increased char formation; (iii) Insignificant effect on flame retardancy
2	Clay mineral (nm) polypropylene; Compatibilizer used was maleic anhydride grafted polypropylene	Melt spinning	(i) Filament produced showed improved tensile strength and thermal stability; (ii) Enhanced dynamic mechanical properties; (iii) Creep resistance
3	Mt-polyurethane (nm) (Mt-PU (nm)); Polyhedral oligomeric silsequioxanes-polyurethane (nm) (POSS-PU)	Coated on polyester and cotton fabric	Relative to Mt-PU, POSS-PU (nm) coating showed improved flame retardancy
4	NaMt-branched polyethyleneimine	Coated on cotton fabric	(i) When heated to 500°C, the amount of char produced was 2 orders of magnitude relative to uncoated fabric; (ii) Reduced afterglow time; (iii) Reduced total heat release; (iv) Reduced heat release capacity