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公开(公告)号：CA3081361A1
公开(公告)日：2019-05-23
申请号：CA3081361
申请日：2018-11-15
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , WANG LU , SANDERS JORDAN ELLIOTT
Abstract: Presented herein are materials, methods, and systems for the improved 3D printing improved 3D printing of materials that include polypropylene. In some embodiments, the present disclosure provides a composite comprising a polymer matrix and a plurality of fibers for improved 3D printing. For example, the polymer matrix may have a composition that includes a polymer blend of polypropylene (PP) and polyethylene (PE) (e.g., high density polyethylene (HDPE), low density polyethylene (LDPE), linear low-density polyethylene (LLDPE)), impact modified polypropylene copolymer and/or polypropylene random copolymer with a plurality of fibers. In some embodiments, the plurality of fibers comprises cellulosic nanofibers (e.g., natural cellulosic nanofibers, e.g., cellulose nanofibrils). In some embodiments, filaments are prepared from the composites by melt compounding the polymer matrix (e.g., PP copolymers and/or PP/PE pellets) with a plurality of fibers and extruding the mixture.
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公开(公告)号：CA2797681C
公开(公告)日：2018-12-18
申请号：CA2797681
申请日：2011-04-27
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , HAN YOUSOO , PENG YUCHENG
Abstract: A method of producing dried cellulose nanofibrils includes atomizing an aqueous suspension of cellulose nanofibrils and introducing the atomized aqueous suspension into a drying chamber of a drying apparatus. The aqueous suspension is then dried, thereby forming substantially non-agglomerated dried cellulose nanofibrils.
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Patent Agency Ranking
公开(公告)号：BR112016000813B1
公开(公告)日：2021-08-03
申请号：BR112016000813
申请日：2014-07-17
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , HAN YOUSOO , PENG YUCHENG
Abstract: compósitos de polímero de nanofibrila a presente invenção refere-se, entre outras coisas, as composições compreendendo as nanofibrilas, de pelo menos um copolímero anidrido maleico (ma) e pelo menos um polímero de matriz, e os métodos de produção de tais composições. os métodos fornecidos e as composições permitem a produção dos compósitos com propriedades inesperadamente superiores incluindo resistência melhorada ao impacto, módulo de tensão da elasticidade, resistência à tração, e módulo flexural da elasticidade como comparado aos compósitos previamente conhecidos. em algumas modalidades, a presente invenção fornece os métodos incluindo as etapas de fornecimento das nanofibrilas de celulose, associação das nanofibrilas de celulose com um copolímero de anidrido maleico (ma) para formar uma mistura de copolímero de nanofibrila- ma, preparação da mistura de copolímero de nanofibrila- ma para adição a um polímero de matriz, e formação de um compósito por meio da associação das mistura de copolímero de nanofibrila ma com o polímero de matriz, em que a quantidade de nanofibrilas de celulose no compósito está entre 3 % e 50 % em peso do compósito.
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14.发明专利
公开(公告)号：CA2740232C
公开(公告)日：2016-09-27
申请号：CA2740232
申请日：2009-10-15
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , WEST CHRISTOPHER H , HAN YOUSOO
Abstract: A composite includes raw lignocellulosic materials dispersed in a thermoplastic polymeric matrix which includes a blend of different polymers. A composite includes raw lignocellulosic materials and a thermal stabilization agent dispersed in a thermoplastic polymeric matrix. A composite includes lignocellulosic nanoparticles dispersed in a thermoplastic polymeric matrix.
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公开(公告)号：CA2918313C
公开(公告)日：2021-07-13
申请号：CA2918313
申请日：2014-07-17
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , HAN YOUSOO , PENG YUCHENG
Abstract: The present invention provides, among other things, compositions comprising nanofibrils, at least one maleic-anhydride (MA) copolymer and at least one matrix polymer, and methods of making such compositions. The provided methods and compositions allow for the production of composites with unexpectedly superior properties including improved impact resistance, tensile modulus of elasticity, tensile strength, and flexural modulus of elasticity as compared to previously known composites. In some embodiments, the present invention provides methods including the steps of providing cellulose nanofibrils, associating the cellulose nanofibrils with a maleic-anhydride (MA) copolymer to form a nanofibril-MA copolymer blend, preparing the nanofibril-MA copolymer blend for addition to a matrix polymer, and forming a composite by associating the nanofibril-MA copolymer blend with the matrix polymer, wherein the amount of cellulose nanofibrils in the composite is between 3% and 50% by weight of the composite.
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公开(公告)号：ES2788658T3
公开(公告)日：2020-10-22
申请号：ES14826568
申请日：2014-07-17
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , HAN YOUSOO , PENG YUCHENG
Abstract: Un método que comprende proporcionar nanofibrillas de celulosa; asociar las nanofibrillas de celulosa con un copolímero de anhídrido maleico (MA) para formar una mezcla de copolímero de MA-nanofibrilla; preparar la mezcla de copolímero de MA-nanofibrilla para su adición a un polímero de matriz; en donde la etapa de preparación comprende secar la mezcla de copolímero de MA-nanofibrilla; y formar un material compuesto por asociación de la mezcla de copolímero de MA-nanofibrilla con el polímero de matriz, en donde la cantidad de nanofibrillas de celulosa en el compuesto está entre el 3 % y el 50 % en peso del material compuesto.
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公开(公告)号：BR112016000813A2
公开(公告)日：2017-07-25
申请号：BR112016000813
申请日：2014-07-17
Applicant: UNIV MAINE SYSTEM
Inventor： GARDNER DOUGLAS J , HAN YOUSOO , PENG YUCHENG
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