A poly(L-lactide) nanocrystal

The poly(L-lactide) (PLLA) is a biocompatible polymer widely studied because is hard. How hard? Well, hard enough to think of it as a possible bone replacement.

Recently, I was involved in a collaboration to study how PLLA crystallizes when confined into thin films: a bidimensional polymer layer, thin enough to be comparable to the size of a single PLLA crystal. An Atomic Force Microscopy image of the PLLA confined into this geometry is shown below. The shape of the crystal, resembling a tree leaf, is called a dendritic one, and it relates to the way the polymer chains arrange with respecto to the surface. In this case, this is a “flat-on” organization, which is the expected one for these ultrathin systems (more on the subject here).

The whole results on this work have been published in Soft Matter Journal, and can be accessed here (paywall).PLLA-a-006_1_001

Advertisements

Leave a Reply! Don't be shy

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.