摘要:
Nanocomposite films comprising carbon nanotubes dispersed throughout a polymer matrix and further comprising at least two surfaces with differing amounts of carbon nanotubes and differing electrical resistivity values are provided. Nanocomposite films comprising a polymer layer, a conductive nanofiller layer, and a polysaccharide layer having antistatic properties are provided. In particular, nanocomposites comprising polyvinyl alcohol as the polymer, graphene as the conductive nanofiller and starch as the polysaccharide are provided. In addition, processes for forming the nanocomposites, methods for characterizing the nanocomposites as well as applications in or on electrical and/or electronic devices are provided.
摘要:
The invention relates to a thermoplastic composition comprising: at least one mixture of polyesters (A) including at least one polylactic acid (A1) and at least one aliphatic polyester (A2) or a semi-aliphatic polyester other than polymer (A1); at least one starch (B); at least one organic plasticiser (C) for starch. The composition is characterised in that: the weight percentage of (A1) in relation to the weight of (A1) and (A2), expressed as dry weight, varies between 2 and 70%, advantageously between 10 and 50%, preferably between 18 and 30%; at least 50% of the weight of the polylactic acid (A1) is formed by semi-crystalline polylactic acid; and in that the weight ratio of starch (B)/organic plasticiser (C), expressed as dry weight, varies between 90/10 and 40/60.
摘要:
The invention relates to a thermoplastic composition comprising at least one polyester (A) which is an aliphatic polyester; at least one starch (B); at least one organic plasticiser (C) for starch; and at lest one monoester compound (D) of fatty monoacid comprising at least 12 carbon atoms and glycerol. The composition is characterised in that the amount by weight of compound (D) varies between 0.05 and 1.7 parts per 100 parts of the dry weight of the different constituents (A), (B) and (C).
摘要:
The invention relates to a composition comprising: at least one aliphatic polyester (A) comprising diols containing at least ethylene glycol, 1,4-butanediol or mixtures thereof and diacids containing at least succinic acid, adipic acid or mixtures thereof; at least one starch (B); at least one organic plasticiser (C) for starch; optionally, an additional polyester or a mixture of additional polyesters (D) different from polyester (A). The composition is characterised in that it also comprises citric acid (E), the amount by weight of citric acid varying between 0.01 and 0.45 parts per 100 parts of the total dry weight of (A), (B), (C) and (D).
摘要:
The present invention relates to a biaxially stretched article obtained by stretching a thermoplastic composition in a machine direction and a transverse direction at elevated temperature, said thermoplastic composition comprising a polyolefin phase containing at least one polyolefin, a starch phase containing thermoplastic starch, and at least one compatibiliser, wherein the article has a layered morphology with alternating layers of starch phase and polyolefin phase, said layers of starch phase and polyolefin phase extending in machine direction and transverse direction.
摘要:
Disclosed is an article for urine odor control. The article may be in the form of a film The article is a homogeneous material may include a water-soluble polymer having an extrusion temperature of 50 to 150 C, and between 0.1% to 50% by weight of an odor-control system. The odor control system may include one or more the following: an enzyme inhibitor, an odor absorber, a blocking agent or an antimicrobial agent. The article may be placed in an absorbent member, wherein the absorbent member is a bandage, a medical drape, a wipe, a towel, a sheet, a pad, a pant or a diaper.
摘要:
Organic infrared attenuation agents have been developed to improve the thermal insulation properties of polymeric foams such as polystyrene low density foams. The organic infrared attenuation agents can include polyols such as sorbitol, maltitol, and poly(ethylene glycol), polysaccharides such as starch or cellulose, and infrared attenuation polyesters such as polybutylene terephthalate. The organic attenuation agents include aromatic compounds or carbon oxygen bonds that are effective in absorbing infrared radiation at the desired wavelengths.
摘要:
Organic infrared attenuation agents have been developed to improve the thermal insulation properties of polymeric foams such as polystyrene low density foams. The organic infrared attenuation agents can include polyols such as sorbitol, maltitol, and poly(ethylene glycol), polysaccharides such as starch or cellulose, and infrared attenuation polyesters such as polybutylene terephthalate. The organic attenuation agents include aromatic compounds or carbon oxygen bonds that are effective in absorbing infrared radiation at the desired wavelengths.
摘要:
The disclosure provides a water-soluble film, including a mixture of a water-soluble polyvinyl alcohol, a plasticizer, and a starch, wherein (a) the starch includes a hydroxypropylated starch in an amount of about 5 phr to about 30 phr; (b) the starch includes a modified starch having a degree of modification greater than about 2%, in an amount of about 2.5 phr to about 30 phr; (c) the starch is an unmodified starch having an amylose content of about 20% to about 80%; or (d) the starch includes a hydroxypropylated starch having an amylose content of about 23% to about 95% and the polyvinyl alcohol includes unmodified polyvinyl alcohol or anionic modified polyvinyl alcohol with the proviso that the anionic modifier is not acrylate. The disclosure further provides a sealed article including a water-soluble film in the form of a pouch defining an interior pouch volume.
摘要:
The invention relates to a packing material for biofilters, having a polyurethane polymer and starch. The packing material is resistant to compaction, can sorb pollutant organic compounds and reduces the start-up time of the biofilter. The packing material can be used as a substrate in the biofiltration of volatile and/or semi-volatile organic compounds present in gaseous or liquid effluents.