Dear Amma Harmal

I have come across two papers, just check if they have useful information for your desired preparation of nano poly vinyl alcohol.

J Control Release. 1998 Dec 4;56(1-3):117-26.

Poly(vinyl alcohol) nanoparticles prepared by freezing-thawing process for protein/peptide drug delivery.

Authors: Li JK1, Wang N, Wu XS.

Journal of Drug Delivery

Volume 2011 (2011), Article ID 962743, 8 pages

http://dx.doi.org/10.1155/2011/962743

Research Article

Preparation of a Nanoscaled Poly(vinyl alcohol)/Hydroxyapatite/DNA Complex Using High Hydrostatic Pressure Technology for In Vitro and In Vivo Gene Delivery

Authors: Tsuyoshi Kimura,1,2 Yoichi Nibe,1 Seiichi Funamoto,1 Masahiro Okada,3 Tsutomu Furuzono,3 Tsutomu Ono,4 Hidekazu Yoshizawa,4 Toshiya Fujisato,5 Kwangwoo Nam,1,2 and Akio Kishida1,2

K. Sreenivas

Èlectrospraying will produce monodisperse nano or micro particles. There are many papers available in this area. Feel free to contact me if you require more information on the technique.

More thanks to all