-
公开(公告)号：CA2963691C
公开(公告)日：2022-08-30
申请号：CA2963691
申请日：2015-04-21
Applicant: CELLUTECH AB
Inventor： JOHANSSON ERIK , TCHANG CERVIN NICHOLAS , GORDEYEVA KORNELIYA , BERGSTROM LENNART , WAGBERG LARS-ERIK
Abstract: The present invention relates to cellular solid materials comprising at least 50 wt% cellulose nanofibers (CNF) and at least 0.2 but less than 40 wt% of a non-ionic surfactant, as calculated on the total weight of the cellular solid material, wherein the material has a density of less than 500 kg/m3; and at least 50% of the cells of the material have a diameter of at least 10 llm. The present invention also relates to a method for preparation of such materials, comprising the steps of providing a dispersion comprising cellulose nanofibers (CNF) in an aqueous solvent; adding a non-ionic surfactant, or a combination thereof to the dispersion to obtain a mixture; preparing a wet foam from the mixture, wherein the wet foam has a density less than 98% of the mixture; and drying the wet foam to obtain a cellular solid material. Moreover, the present invention refers to the use of such materials for insulation, as a packaging material and or as an absorption material.
-
公开(公告)号：CA2963691A1
公开(公告)日：2016-05-06
申请号：CA2963691
申请日：2015-04-21
Applicant: CELLUTECH AB
Inventor： JOHANSSON ERIK , TCHANG CERVIN NICHOLAS , GORDEYEVA KORNELIYA , BERGSTROM LENNART , WAGBERG LARS-ERIK
Abstract: The present invention relates to cellular solid materials comprising cellulose nanofibers (CNF) and an anionic or non-ionic surfactant, a method for preparation of such materials, as well as their use.
-
公开(公告)号：CA2878276A1
公开(公告)日：2014-01-16
申请号：CA2878276
申请日：2013-07-10
Applicant: CELLUTECH AB
Inventor： TCHANG CERVIN NICHOLAS , BERGSTROM LENNART , WAGBERG LARS-ERIK
Abstract: A hydrophobized nanofibrillated cellulose foam comprising a charged hydrophobic amine, a method for providing such foam and its use.
-
-
Search Results
3
records
(took 0.018 seconds)
