Moulded bodies, in particular fibres and the structures thereof exhibiting thermoregulation properties

Abstract

The invention related to a method for producing molded bodies made of cross-linked native polymers in such a way that a network is formed by chemically coupled functional groups, hydrogen bridges or polymer or oligomer structures helically connected to each other and up to 200 mass % of micro-encapsulated phase change material is included into a polymer matrix with respect to the cross-linked polymer. Said cross-linked polymers can, for example be embodied in the form of polysaccharides and/or globular proteins. In the form of fibers the molded bodies can be processed to textile fabrics having enhanced thermoregulation properties and an improved wearability to the textiles produced therefrom, as well as a high functionality with respect to heat storage and heat removal when used in other applications.

1 . Method for producing molded bodies, in particular fibers and textile fabrics thereof, with thermo-regulation properties on the basis of network forming polymeric matrix materials dissolved in aqueous amino oxides, preferably in n-methylmorpholin-n-oxides, characterized in that 
 up to 200 weightpercent of a micro-encapsulated    phase change material, related to the network forming polymer, are inserted into a matrix network setup of polysaccharides and/or globular proteins in such a way that either    a) the micro-encapsulated phase change material is given as a component directly into the suspension consisting of the polymer, the aqueous n-methylmorpholin-n-oxide solution and propylgallate as a stabilizer into a dissolving vessel with stirrer, or    b) in the case of the globular protein, used as polymer, after the pre-interlinking of the former the micro-encapsulated phase change material is given together with the aqueous n-methylmorpholin-n oxide solution and the propylgallate as a stabilizer, and, if necessary, with a further network forming polymer such as, for example, cellulose, into a jacket heated kneading machine, then the dissolving vessel and the kneading machine, respectively are evacuated, the suspension is heated, stirred, the water is evaporated and fibers are molded from the respectively achieved highly viscous spinning solution after a dry/wet-extrusion process or    c) the micro-encapsulated phase change material is mixed together with an aqueous n-methylmorpholin-n-oxide solution to a stock solution, and the latter is given to an already completed spinning solution consisting of an aqueous n-methylmorpholin-n oxide solution, polymer and propylgallate as stabilizer and, by intimately mixing both, the solutions are given into a mixer, and from the high viscous spinning solution achieved in this manner also fibers are molded after passing a dry/wet extrusion process.    
   
   
       2 . Method as claimed in  claim 1 , 
 characterized in that polysaccharides and/or polysaccharide derivatives are employed as network forming polymers, which are formed from hexoses with glycosidic 1,4-bonds and 1,6-bonds or at least partially from uronic acids.    
   
   
       3 . Method as claimed in  claim 1 , characterized in that as the network forming polysaccharides are cellulose and/or cellulose compounds.  
   
   
       4 . Method as claimed in  claim 1 , characterized in that a water-soluble homopolysaccharide or a heteropolysaccharide or the derivates thereof are inserted as polysaccharides.  
   
   
       5 . Method as claimed in  claim 1 , characterized in that the network forming polysaccharides are native globular proteins.  
   
   
       6 . Method as claimed in  claim 1 , characterized in that natural globular proteins are, by aid of aldehydes such as, for example, glutaraldehyde, pre-interlinked via amino-groups and/or amide groups and/or imino-groups of the peptide bonds and/or oxy-groups of the serine and/or cysteine components.  
   
   
       7 . Method as claimed in  claim 1 , characterized in that up to 99.5 weightpercent of polysaccharides and 0.5 to 100 weightpercent, preferably 60 to 90 weightpercent of globular proteins are inserted, related to the entire mass of the solved compounds.  
   
   
       8 . Method as claimed in  claim 1 , characterized in that micro-encapsulated phase change materials such as Thermasorb® TY 83 of Outlast Technologies Inc., which have been screened before to a maximal grain size of 50 μm, or Lurapret® PMC 28 of BASF AG are employed.