PMID- 36080728 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220913 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 14 IP - 17 DP - 2022 Sep 2 TI - Effect of Increased Powder-Binder Adhesion by Backbone Grafting on the Properties of Feedstocks for Ceramic Injection Molding. LID - 10.3390/polym14173653 [doi] LID - 3653 AB - The good interaction between the ceramic powder and the binder system is vital for ceramic injection molding and prevents the phase separation during processing. Due to the non-polar structure of polyolefins such as high-density polyethylene (HDPE) and the polar surface of ceramics such as zirconia, there is not appropriate adhesion between them. In this study, the effect of adding high-density polyethylene grafted with acrylic acid (AAHDPE), with high polarity and strong adhesion to the powder, on the rheological, thermal and chemical properties of polymer composites highly filled with zirconia and feedstocks was evaluated. To gain a deeper understanding of the effect of each component, formulations containing different amounts of HDPE and or AAHDPE, zirconia and paraffin wax (PW) were prepared. Attenuated total reflection spectroscopy (ATR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and rotational and capillary rheology were used for the characterization of the different formulations. The ATR analysis revealed the formation of hydrogen bonds between the hydroxyl groups on the zirconia surface and AAHDPE. The improved powder-binder adhesion in the formulations with more AAHDPE resulted in a better powder dispersion and homogeneous mixtures, as observed by SEM. DSC results revealed that the addition of AAHDPE, PW and zirconia effect the melting and crystallization temperature and crystallinity of the binder, the polymer-filled system and feedstocks. The better powder--binder adhesion and powder dispersion effectively decreased the viscosity of the highly filled polymer composites and feedstocks with AAHDPE; this showed the potential of grafted polymers as binders for ceramic injection molding. FAU - Ghasemi-Mobarakeh, Laleh AU - Ghasemi-Mobarakeh L AD - Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran. AD - Polymer Processing, Montanuniversitaet Leoben, 8700 Leoben, Austria. FAU - Cano, Santiago AU - Cano S AUID- ORCID: 0000-0001-6361-6185 AD - Polymer Processing, Montanuniversitaet Leoben, 8700 Leoben, Austria. FAU - Momeni, Vahid AU - Momeni V AD - Polymer Processing, Montanuniversitaet Leoben, 8700 Leoben, Austria. FAU - Liu, Dongyan AU - Liu D AUID- ORCID: 0000-0002-1621-0083 AD - Institute of Metal Research (IMR), Chinese Academy of Sciences, Shenyang 110016, China. FAU - Duretek, Ivica AU - Duretek I AD - Polymer Processing, Montanuniversitaet Leoben, 8700 Leoben, Austria. FAU - Riess, Gisbert AU - Riess G AUID- ORCID: 0000-0002-7642-7794 AD - Chemistry of Polymeric Materials, Montanuniversitaet Leoben, 8700 Leoben, Austria. FAU - Kukla, Christian AU - Kukla C AUID- ORCID: 0000-0002-2233-009X AD - Industrial Liaison Department, Montanuniversitaet Leoben, 8700 Leoben, Austria. FAU - Holzer, Clemens AU - Holzer C AUID- ORCID: 0000-0001-5149-7895 AD - Polymer Processing, Montanuniversitaet Leoben, 8700 Leoben, Austria. LA - eng GR - 875650/Austrian Research Promotion Agency/ PT - Journal Article DEP - 20220902 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC9460726 OTO - NOTNLM OT - acrylic acid grafted high density polyethylene OT - binder OT - ceramic injection molding OT - feedstock OT - high density polyethylene OT - paraffin wax COIS- The authors declare no conflict of interest. EDAT- 2022/09/10 06:00 MHDA- 2022/09/10 06:01 PMCR- 2022/09/02 CRDT- 2022/09/09 01:31 PHST- 2022/07/28 00:00 [received] PHST- 2022/08/27 00:00 [revised] PHST- 2022/08/28 00:00 [accepted] PHST- 2022/09/09 01:31 [entrez] PHST- 2022/09/10 06:00 [pubmed] PHST- 2022/09/10 06:01 [medline] PHST- 2022/09/02 00:00 [pmc-release] AID - polym14173653 [pii] AID - polymers-14-03653 [pii] AID - 10.3390/polym14173653 [doi] PST - epublish SO - Polymers (Basel). 2022 Sep 2;14(17):3653. doi: 10.3390/polym14173653.