Toothbrush Handle Injection Compound

About This Product

A melt-compounded blend of polylactic acid and polybutylene adipate terephthalate, supplied as a pellet compound for injection moulding. PLA, polymerised from lactide obtained by fermenting plant sugars, carries the stiffness; PBAT, an aliphatic-aromatic copolyester, carries the toughness. As a compounded blend it has no CAS number of its own. A toothbrush handle lives in a wet environment for months, so a biodegradable polymer used there has to resist hydrolysis for the service life of the product and degrade only once it reaches a composting environment. Both polyesters break down by hydrolysis of the ester backbone, but the rate depends on temperature, moisture and microbial activity together rather than on contact with water alone, which is why the same handle behaves so differently in a bathroom and in compost. This grade balances that: rigidity and dimensional stability in use, with the tuft anchorage a brush head requires, since staples must stay held in the moulded tuft holes without the polymer creeping or swelling. Supplied as a raw material for processing on the buyer's own line. We do not produce finished articles. It is used in toothbrush handles, personal care products and moulded consumer goods. Bio Green Chem supplies this toothbrush handle injection compound to specification on polymer base, pellet form, melt flow for your moulding window, colour and wet-service dimensional stability.