Polyhydroxyalkanoate Nanocomposites with Cellulose Nanocrystals as Biodegradable Coating and Packaging Materials

2021 ◽  
Author(s):  
Mariano Pracella ◽  
Claudio Mura ◽  
Giancarlo Galli
Keyword(s):  
Cellulose Nanocrystals ◽  
Packaging Materials

scholarly journals The Effect of Moisture on Cellulose Nanocrystals Intended as a High Gas Barrier Coating on Flexible Packaging Materials

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 415 ◽  
Author(s):  
Ghislain Fotie ◽  
Riccardo Rampazzo ◽  
Marco Ortenzi ◽  
Stefano Checchia ◽  
Dimitrios Fessas ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Packaging Materials ◽  
Gas Barrier ◽  
Barrier Coating ◽  
Flexible Packaging ◽  
Effect Of Moisture

scholarly journals Comparison of cellulose nanocrystals obtained by sulfuric acid hydrolysis and ammonium persulfate, to be used as coating on flexible food-packaging materials

Cellulose ◽  
2016 ◽  
Vol 23 (1) ◽  
pp. 779-793 ◽  
Author(s):  
Erika Mascheroni ◽  
Riccardo Rampazzo ◽  
Marco Aldo Ortenzi ◽  
Giulio Piva ◽  
Simone Bonetti ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Cellulose Nanocrystals ◽  
Food Packaging ◽  
Ammonium Persulfate ◽  
Packaging Materials ◽  
Food Packaging Materials

Structural investigation of some native biodegradable packaging materials

2017 ◽  
Vol 62 (2) ◽  
pp. 19-28
Author(s):  
Onuc Cozar ◽  
◽  
Nicolae Cioica ◽  
Elena Mihaela Nagy ◽  
Constantin Coţa ◽  
...  
Keyword(s):  
Structural Investigation ◽  
Packaging Materials ◽  
Biodegradable Packaging

Permeability of Polymeric Packaging Materials

2007 ◽  
Vol 10 (-1) ◽  
pp. 33-34 ◽  
Author(s):  
Stanislav Zeman ◽  
L'ubomír Kubík
Keyword(s):  
Packaging Materials

Tuning the Magnetic Alignment of Cellulose Nanocrystals from Perpendicular to Parallel Using Lepidocrocite Nanoparticles

2019 ◽  
Author(s):  
Valentina Guccini ◽  
Sugam Kumar ◽  
Yulia Trushkina ◽  
Gergely Nagy ◽  
Christina Schütz ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Cellulose Nanocrystals ◽  
Small Angle Neutron Scattering ◽  
Lower Amount ◽  
Magnetic Alignment ◽  
Polarized Optical Microscopy ◽  
Parallel Orientation ◽  
Weak Magnetic Fields

The magnetic alignment of cellulose nanocrystals (CNC) and lepidocrocite nanorods (LpN), pristine and in hybrid suspensions has been investigated using contrast-matched small-angle neutron scattering (SANS) under in situ magnetic fields (0 – 6.8 T) and polarized optical microscopy. The pristine CNC (diamagnetic) and pristine LpN (paramagnetic) align perpendicular and parallel to the direction of field, respectively. The alignment of both the nanoparticles in their hybrid suspensions depends on the relative amount of the two components (CNC and LpN) and strength of the applied magnetic field. In the presence of 10 wt% LpN and fields < 1.0 T, the CNC align parallel to the field. In the hybrid containing lower amount of LpN (1 wt%), the ordering of CNC is partially frustrated in all range of magnetic field. At the same time, the LpN shows both perpendicular and parallel orientation, in the presence of CNC. This study highlights that the natural perpendicular ordering of CNC can be switched to parallel by weak magnetic fields and the incorporation of paramagnetic nanoparticle as LpN, as well it gives a method to influence the orientation of LpN.<br>

Market Survey of Non-Timber Forest Products in the Sunyani Municipality

2018 ◽  
Vol 3 (2) ◽  
pp. 44-53
Author(s):  
S.D. Akoto
Keyword(s):  
Building Materials ◽  
Significant Proportion ◽  
Forest Products ◽  
Packaging Materials ◽  
Medicinal Products ◽  
Monthly Basis ◽  
Rural Livelihood ◽  
Non Timber Forest Products ◽  
Communal Lands ◽  
Forest Lands

This study sought to: (1) identify the types and sources of Non-Timber Forest Products (NTFPs) traded; (2) find the frequencyof the NTFPs trade and (3) identify the challenges in NTFPs trading in the Sunyani Municipality. The survey was carried outfrom February, 2014 to April, 2014 mainly at the Sunyani Central and Nana Bosoma Markets in the Sunyani Municipality. Thetarget population comprised NTFPs collectors (gatherers), sellers and consumers. Respondents were purposively sampled. Atotal of 100 respondents were engaged in this study. The NTFPs were grouped into six categories namely; food, medicine,building materials, packaging materials, artefacts and domestic utensils. Key informants’ interviews were also conducted atthe Sunyani Forest Services Division to triangulate the data already gathered. Statistical Package for Social Sciences was usedto analyze the data obtained. The study demonstrated that domestic utensils (37%), food (33%), medicinal products (12%),packaging materials (9%), artefacts (6%) and building materials (3%) were the types of NTFPs traded in the two market centers.The results also showed that majority of the respondents (77%) harvest their NTFPs from forest lands as against 23% whoharvest from communal lands. A significant proportion of the respondents (52%) traded in above 40 kg of NTFPs and only 4%were seen trading in 10 kg of NTFPs. The study further highlighted that food (28%) and domestic utensils (26%) were regularlybrought to the market centers on weekly basis whilst significant proportions of medicinal products (9%), building materials(3%) and artefacts (4%) were brought to the market venues on monthly basis. Cumbersome permit procedure (40%), increasedmarket demand (15%) and financial constraints (20%) were identified as some of the challenges encountered in NTFPs tradingin the Sunyani Municipality. To ensure strict monitoring and sustainability of the resource, there is the need for sensitizationprogramme on the importance of NTFPs in rural livelihood and why their conservation is vital in meeting the needs of thepresent generation whilst not undermining their potential in supplying the needs of future generations.

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