From 6c3926acdc15a9a8c1d13603787e62a5c4b4f6f8 Mon Sep 17 00:00:00 2001
From: Nikhil Lal <nikhil.lal@gmail.com>
Date: Tue, 19 May 2020 10:24:37 -0400
Subject: [PATCH] added reference to PP filament paper

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index f8a392e..20fbea2 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,9 @@ Nikhil: I've been thinking the same thing, PP is shockingly under recovered (gra
 
 Took some time this weekend to check out our Filabot at A2, and it looks like we might be able to retrofit it for a potential PP recycling use case.
 
+Atsani, S. I., and H. Mastrisiswadi. "Recycled Polypropylene Filament for 3D Printer: Extrusion Process Parameter Optimization." IOP Conference Series: Materials Science and Engineering. Vol. 722. No. 1. IOP Publishing, 2020.
+https://iopscience.iop.org/article/10.1088/1757-899X/722/1/012022
+
 **Biodegradable**
 
 Brainstorming topic: Some bioplastics are antimicrobial, and could be used for textiles. However, it is uncertain whether these would be appropriate barrier materials, and how biodegradability would be managed after end of life.
-- 
GitLab