Polyolefin-based nanocomposite and preparation thereof
AssigneeIndustrial Technology Research Institute
InventorsMing-Siao Hsiao, Gwo-Yang Chang, Shyh-Yang Lee, Sung-Jeng Jong
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Abstract
A polyolefin-based nanocomposite and a method of preparing the same are disclosed. The polyolefin-based nanocomposite is prepared by melt kneading a mixture including (A) 40-99.8% by weight of a matrix polymer of polyolefin; (B) 0.1-30% by weight of a polyolefin compatilizer containing polar reactive groups; and (C) 0.1-30% by weight of a layered clay material having a quaternary ammonium ion bonded to the surface thereof. The quaternary ammonium ion contains (I) at least one alkyl group having at least 15 carbon atoms; and (ii) a substitutent having —Si—O—Si-linkage and at least one terminal reactive group.
Claims27
A polyolef in-based nanocomposite prepared by melt kneading a mixture comprising:
- (A) 40-99.8% by weight of a matrix polymer comprising polyolefin;
- (B) 0.1-30% by weight of a polyolefin compatilizer containing polar reactive groups;
- and
- (C) 0.1-30% by weight of a layered clay material having a quaternary ammonium bonded to the surface thereof, wherein the quaternary ammonium contains (I) at least one alkyl group having at least 15 carbon atoms;
- and (ii) a substitutent having —Si—O—Si-linkage and at least one terminal reactive group.
A method of modifying a layered clay material, comprising the following steps:
- (a) subjecting a quaternary ammonium having an alkoxysilyl group and an alkoxysilane having a reactive terminal group to a sol-gel reaction to obtain a quaternary ammonium containing at least one terminal reactive group and —Si—O—Si linkage;
- (b) ion-exchanging the obtained quaternary ammonium and the layered clay material to intercalate said quaternary ammonium into the interlayers of said layered clay material to obtain a modified layered clay material.
A method of preparing a polyolefin-based nanocomposite, comprising the following steps:
- (a) subjecting a quaternary ammonium having an alkoxysilyl group and an alkoxysilane having a reactive terminal group to a sol-gel reaction to obtain a quaternary ammonium containing at least one terminal reactive group and —Si—O—Si linkage;
- (b) ion-exchanging the obtained quaternary ammonium and a layered clay material to intercalate said quaternary ammonium into the interlayers of said layered clay material to obtain a modified layered clay material;
- (c) blending said modified layered clay material with a polyolefin compatilizer containing polar reactive groups to obtain a homogenous blend;
- and
- (d) melt kneading said blend and a matrix polymer containing polyolefin to obtain said polyolefin-based nanocomposite.
A method of preparing a polyolefin-based nanocomposite, comprising the following steps:
- (a) subjecting a quaternary ammonium having an alkoxysilyl group and an alkoxysilane having a reactive terminal group to a sol-gel reaction to obtain a quaternary ammonium containing at least one terminal reactive group and —Si—O—Si linkage;
- (b) ion-exchanging the obtained quaternary ammonium and a layered clay material to intercalate said quaternary ammonium into the interlayers of said layered clay material to obtain a modified layered clay material;
- and
- (c) melt kneading said modified layered clay material, a polyolefin compatilizer containing polar reactive groups, and a matrix polymer containing polyolefin to obtain said polyolefin-based nanocomposite.
Dependencies are inferred from the claim text.