Sökning: "DWR"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet DWR.

1. 1. Chemical substitution with a life cycle perspective: The case of per- and polyfluoroalkyl substances in durable water repellents

   Författare :Hanna Holmquist; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; LCIA; CAA; LCA; PFAS; DWR;

   Sammanfattning : The aim of the research presented in this thesis was to support the process of substitution of side-chain fluorinated polymers in durable water repellents (DWRs), that give rise to emissions of hazardous per- and polyfluoroalkyl substances (PFASs). The focus was on: i) the provision of improved decision support regarding the environmental and human health performance of alternatives, and ii) public readiness for substitution and what messages can motivate consumers to voluntary substitution. LÄS MER

3. 2. Environmental Assessment of Alternative Durable Water Repellent Chemicals. First steps towards a holistic assessment

   Författare :Hanna Holmquist; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LCA; diffuse emissions; wax; silicones; risk assessment; DWR; PFAS; CAA; dendrimers;

   Sammanfattning : Durable water repellent (DWR) finishes are applied to textiles to impart water and in some cases oil repellency. Water (and oil) repellency can be an important contribution to a textile’s performance, for comfort or for the protection of human lives under extreme conditions. LÄS MER

4. 3. The missing links : Towards an Informed Substitution of Durable Water Repellent Chemicals for Textiles

   Författare :Steffen Schellenberger; Ian Cousins; Stefan Stolte; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Durable water repellents (DWRs) that provide liquid repellency to functional textiles are part of an ongoing global substitution process. The process of substitution was initiated after DWRs based on side-chain fluorinated polymers (long-chain SFPs) were identified to contribute to the diffuse release of long-chain perfluoroalkyl acids (PFAAs) to the environment. LÄS MER

5. 4. The Problem of Objects in Design of Health Care Information Systems

   Författare :Hans Kyhlbäck; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; object; object-orientation; wound care; digital photos; activity theory; computer science; information system;

   Sammanfattning : This thesis is about two different theoretical interpretations of objects and object-orientation in design of health care information systems – the interpretations of Activity Theory/Developmental Work Research and Computer Science respectively. One motive to my interest in objects of work and software, is to better understand the problems and possibilities in an inter¬dis¬ciplinary research project. LÄS MER

7. 5. Why Does It Always Rain On Me? : Properties of Alternative Durable Water Repellent Chemicals for Textiles

   Författare :Steffen Schellenberger; Ian Cousins; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Environmental pollution caused by persistent perfluoroalkyl acids (PFAAs) - Organic Chemicals with confirmed levels of toxicity and propensity for bioaccumulation - has given rise to global environmental concerns. Functional textiles Containing durable water repellents (DWRs) That are based on side-chain fluorinated polymers are Noted to be the major contributors to the release of Such environmental pollutants. LÄS MER