Ari Ämmälä

Ari Ämmälä


Adjunct professor
Fiber and particle dispersions

6 peer reviewed publications in international journals.


Ari has been the university lecturer at Fibre and Particle Engineering Research Unit since 2010. He graduated from the University of Oulu with degree of M.Sc. (tech.) in Process Engineering in 1994 and completed his PhD studies in 2001. 

Research interests

  • Bioproduct technology
  • Pulp and paper technology
  • Process engineering

Scientific merits

Selected publications

  • Koivuranta, Elisa; Hietala, Maiju; Ämmälä, Ari; Oksman, Kristiina; Illikainen, Mirja (2017) Improved durability of lignocellulose-polypropylene composites manufactured using twin-screw extrusion. - Composites Part A: Applied Science and Manufacturing 101, 265-272 . [Original]
  • Laitinen, Ossi; Kemppainen, Kalle; Ämmälä, Ari; Sirviö, Juho Antti; Liimatainen, Henrikki; Niinimäki, Jouko (2014) Use of chemically modified nanocelluloses in flotation of hematite and quartz. - Industrial & engineering chemistry research 53 (52), 20092−20098
  • Ämmälä, Ari; Jokinen, Hanna; Niinimäki, Jouko; Illikainen, Mirja (2015) Role of foil pulsation in the capacity of a machine screen. - Nordic pulp & paper research journal 30 (2), 220-224 . [Original]
  • Kemppainen, Kalle; Suopajärvi, Terhi; Laitinen, Ossi; Ämmälä, Ari; Liimatainen, Henrikki; Illikainen, Mirja (2016) Flocculation of fine hematite and quartz suspensions with anionic cellulose nanofibers. - Chemical engineering science 148, 256-266 . [Original]
  • Hietala, Maiju; Ämmälä, Ari; Silvennoinen, Jukka; Liimatainen, Henrikki (2016) Fluting medium strengthened by periodate–chlorite oxidized nanofibrillated celluloses. - Cellulose 23 (1), 427-437 . [Original]
  • Ämmälä, Ari; Liimatainen, Henrikki; Burmeister, Christine; Niinimäki, Jouko (2013) Effect of tempo and periodate-chlorite oxidized nanofibrils on ground calcium carbonate flocculation and retention in sheet forming and on the physical properties of sheets. - Cellulose 20 (5), 2451-2460 . [Original]