Abstrakti
Surface modification of colloidal lignin particles (CLPs), which are obtained from renewable resources, is a plausible route towards novel biomaterials. Here we show that adsorption of cationic lignin onto spherical CLPs produces positively charged particles with tailored properties for the stabilization of Pickering emulsions. The threshold dosing of cationic lignin needed to achieve colloidally stable cationic dispersions was 4% relative to the dry weight of CLPs. Compared to irregular kraft lignin particles or regular CLPs, cationic CLPs stabilized a broader array of durable Pickering emulsions. This all-lignin adsorption process to prepare cationic CLPs is advantageous because it minimizes the consumption of synthetic polymers, and opens new application opportunities for structurally defined nano- and microscale lignin particles.
| Alkuperäiskieli | englanti |
|---|---|
| Lehti | Green Chemistry |
| Vuosikerta | 19 |
| Numero | 24 |
| Sivut | 5831-5840 |
| Sivumäärä | 10 |
| ISSN | 1463-9262 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 2017 |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu |
Lisätietoja
Funding Information:Authors acknowledge Domtar for providing the softwood kraft lignin, and Nina Forsman and Johanna Hakonen (Aalto University) for the contact angle and GPC analyses, respectively. Yan Zhenxing is thanked for the preparation of CLP samples for AFM imaging. MS and TL thank the Finnish Funding Agency for Innovation (TEKES) and the industrial partners of the COLIAD, #905/31/2016 project. MHS and MÖ acknowledge funding from the Academy of Finland (postdoctoral and project grants 296547 and 278279, respectively). This work made use of the Aalto University Bioeconomy Facilities.
Publisher Copyright:
© 2017 The Royal Society of Chemistry.