Green Composite Based on PHB and Montmorillonite for KNO3 and NPK Delivery System

Green Composite Based on PHB and Montmorillonite for KNO3 and NPK Delivery System Controlled release fertilizer (CRF) as a safe system for reducing environmental pollution still remains as demand for the agribusiness. Natural and biodegradable polymer materials have been proposed as a prominent and sustainable controlled delivery system. Composite based on polyhydroxybutyrate (PHB), starch, glycerol and montmorillonite (PHBSGMMt) has been proposed as a carrier for controlled release fertilizers, such as KNO3 and NPK. PHBSGMMt with 10 wt% of KNO3 or NPK processed by melting at 162 °C, 60 rpm during 10 min in a mixer chamber of torque rheometer. Composites were characterized according to its structure by FTIR and XRD, in thermal behavior by TGA and DSC, and morphology by SEM. Fertilizers release in water was determined by ionic conductivity. Clay, KNO3, and NPK increased the PHB/starch compatibility and homogeneity, resulting in a well-interfaced material obtained for PHBSGMMTNPK. MMtKNO3 was mainly on PHB phase and MMtNPK on the compatible polymeric phase. These behaviors explain the faster release of KNO3 in water medium since the KNO3 has high solubility and the phase separation creates fissures that turn in water pathway. Kinetic parameters classified the material as a non-Fickian diffusion or anomalous transport mechanism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Polymers and the Environment Springer Journals

Green Composite Based on PHB and Montmorillonite for KNO3 and NPK Delivery System

Loading next page...
 
/lp/springer_journal/green-composite-based-on-phb-and-montmorillonite-for-kno3-and-npk-TTsuFBdFza
Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Chemistry; Polymer Sciences; Environmental Chemistry; Materials Science, general; Environmental Engineering/Biotechnology; Industrial Chemistry/Chemical Engineering
ISSN
1566-2543
eISSN
1572-8900
D.O.I.
10.1007/s10924-017-0979-4
Publisher site
See Article on Publisher Site

Abstract

Controlled release fertilizer (CRF) as a safe system for reducing environmental pollution still remains as demand for the agribusiness. Natural and biodegradable polymer materials have been proposed as a prominent and sustainable controlled delivery system. Composite based on polyhydroxybutyrate (PHB), starch, glycerol and montmorillonite (PHBSGMMt) has been proposed as a carrier for controlled release fertilizers, such as KNO3 and NPK. PHBSGMMt with 10 wt% of KNO3 or NPK processed by melting at 162 °C, 60 rpm during 10 min in a mixer chamber of torque rheometer. Composites were characterized according to its structure by FTIR and XRD, in thermal behavior by TGA and DSC, and morphology by SEM. Fertilizers release in water was determined by ionic conductivity. Clay, KNO3, and NPK increased the PHB/starch compatibility and homogeneity, resulting in a well-interfaced material obtained for PHBSGMMTNPK. MMtKNO3 was mainly on PHB phase and MMtNPK on the compatible polymeric phase. These behaviors explain the faster release of KNO3 in water medium since the KNO3 has high solubility and the phase separation creates fissures that turn in water pathway. Kinetic parameters classified the material as a non-Fickian diffusion or anomalous transport mechanism.

Journal

Journal of Polymers and the EnvironmentSpringer Journals

Published: Mar 10, 2017

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off