Abstract
Focused on the design and implementation of superhydrophobic surface of poly(lactic acid) (PLA) film, the novel morphology regulating strategy (i.e., carbon quantum dots (CQDs)-nucleated interfacial-crystallization induced phase separation) is reported to fabricate CQDs-grafted-poly(D-lactic acid)/poly(L-lactic acid) (CQDs-g-PDLA/PLLA) films with tailorable hierarchical micro-nano structures. The hierarchical structures of CQDs-g-PDLA/PLLA films evolve from laminar protrusions to microspheres to petal-like structures and further to micro-nano sphere structures, only by adjusting the CQDs-g-PDLA content. 30 wt% CQDs-g-PDLA/PLLA film with lotus leaf-like microstructures exhibits a record-high contact angle of 168° and a rather small sliding angle of 7.8°, indicating the pretty superhydrophobicity. Constructing controllable hierarchical structures is key factor to attain the superhydrophobicity, instead of commonly introducing suitable nanoparticles or hydrophobization agents. In combination with the high porosity, 30 wt% CQDs-g-PDLA/PLLA film illustrates a maximal oil-absorption up to 9.7 g/g. This strategy provides a novel insight into designing and constructing superhydrophobic PLA materials for the enormous application potential in surface self-cleaning and oil-water separation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
