Preparation and evaluation of temperature-responsive nanocellulose based filters

Minna Hakalahti, Tuomas Hänninen, Harri Setälä

Research output: Contribution to conferenceConference PosterScientificpeer-review

Abstract

Filters play a vital role in development of environmentally friendly processes. Cellulose provides a biodegradable and versatile alternative for synthetic filter materials. In this study, different kinds of nanocellulosic materials were utilized to prep. stimuli-responsive filters for water purifn. Nanocellulosic materials were prepd. mech. from unmodified and TEMPO-oxidized pulp. TEMPO-oxidized cellulose contains a high amt. of carboxylic groups, which can be used to scavenge metal ions. Nanocelluloses were grafted using N-isopropylacrylamide (NIPAM) to introduce temp.-responsive functionalities. Poly(NIPAM) is a temp.-responsive polymer, which undergoes a change in hydration state at 32 °C. Solvent casting and coating methods were evaluated for prepn. of free-standing and support material-based filters, resp. Filter stability, permeate flux, morphol. and particle and ion retention were characterized.
Original languageEnglish
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event245th ACS National Meeting and Exposition - New Orleans, United States
Duration: 7 Apr 201311 Apr 2013
Conference number: 245

Conference

Conference245th ACS National Meeting and Exposition
CountryUnited States
CityNew Orleans
Period7/04/1311/04/13

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    Hakalahti, M., Hänninen, T., & Setälä, H. (2013). Preparation and evaluation of temperature-responsive nanocellulose based filters. Poster session presented at 245th ACS National Meeting and Exposition, New Orleans, United States.