Water soluble polymer based hybrid nanocomposites

George, Johnsy; Sabapathi, S. N.; Siddaramaiah,

doi:10.1016/b978-0-08-100789-1.00003-4

Cited by 12 publications

(17 citation statements)

References 46 publications

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“…This improved barrier performance of PLA/CNC composite films can be attributed to the presence of highly crystalline cellulose nanocrystals which act as impermeable regions in the matrix. The impermeable regions create a more tortuous diffusion path for the permeant, leading to slower diffusion and hence lower transmission rates .…”

Section: Resultsmentioning

confidence: 99%

Performance of poly(lactic acid)/ cellulose nanocrystal composite blown films processed by two different compounding approaches

Karkhanis

Stark

Sabo

et al. 2017

Polymer Engineering & Sci

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This study was aimed to identify the best approach of incorporating cellulose nanocrystals (CNCs) into a poly(lactic acid) (PLA) matrix by examining two different CNC addition approaches. The first approach consisted of melt‐blending (MB) PLA and CNCs in a three‐piece internal mixer whereas the second method involved direct dry‐mixing of PLA and CNCs in a high intensity mixer. The compounded materials were then blown into films and compared in terms of particle dispersion, optical, thermal, molecular weight and barrier properties. Good distribution was achieved by both the direct dry‐ and MB methods. However, some agglomerations were still present that resulted in reduced transparency of the composite films. Furthermore, the PLA/CNC films thermally degraded during the blending processes indicated by the drop in their molecular weights due to chain scissions. More chain scissions occurred in melt‐blended (MB) films than the dry‐blended (DB) counterparts. The addition of only 1% CNCs into the PLA matrix by the direct dry‐ and MB approaches improved the water barrier properties of PLA films by 30% and 24%, and oxygen barrier properties by 60% and 39%, respectively. The inferior performance of the MB films compared to the direct DB counterparts could be attributed to more chain scissions in these films. Thus, the direct dry‐blending (DB) process appeared to be the better approach of incorporating CNCs into the PLA matrix. POLYM. ENG. SCI., 58:1965–1974, 2018. © 2017 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Performance of poly(lactic acid)/ cellulose nanocrystal composite blown films processed by two different compounding approaches

Karkhanis

Stark

Sabo

et al. 2017

Polymer Engineering & Sci

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“…Cellulose nanocrystals are unique nanomaterials derived from the most abundant and almost inexhaustible natural polymer, cellulose. These nanomaterials have received significant interest due to their mechanical, optical, chemical, and rheological properties . Cellulose nanocrystals primarily obtained from naturally occurring cellulose fibers are biodegradable and renewable in nature and hence they serve as a sustainable and environmentally friendly material for most applications.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of nanocellulose loaded poly(AA‐co‐HEMA) hydrogels for ceftriaxone controlled delivery and crystal violet adsorption

Hosseinzadeh

Pashaei

2018

Polymer Composites

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Superabsorbent polymer nanocomposites (SAPCs) are very promising and versatile materials for biomedical applications. In this research work, we focused on a novel nanocellulose-based SAPC, poly(acrylic acid-co-2-hyderoxy ethyl methacrylate)-grafted cellulose nanocrystal (CNC) composite, P(AA-co-HEMA)-g-CNC as a potential drug delivery vehicle and a dye adsorbent. Ceftriaxone and crystal violet were selected as a model drug and dye, respectively. P(AA-co-HEMA)-g-CNC was synthesized by graft copolymerization reaction and the product was characterized by FTIR spectroscopy. A proposed mechanism for SAPC formation was suggested and the morphology of the sample was studied by SEM spectroscopy. The swelling of SAPCs was examined in buffer solutions with pH ranged 4-12. The product exhibited a pH-responsiveness character so that a swelling-deswelling pulsatile behavior was recorded at pHs 2 and 8. Drug loading efficiency and drug release profiles of the P(AA-co-HEMA)-g-CNC as well as the dye adsorption behavior were studied in detail. Maximum drug encapsulation efficiency and dye adsorption capacity were found to be 89% and 231 mg g 21 , respectively. Conclusively, the obtained results indicated that the synthesized SAPCs could be successfully used as promising drug delivery systems and dye adsorbent materials in wastewater treatment. POLYM. COMPOS., 00:000-000,

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“…This effect has been found to be more prominent when PLA is the grafting polymer. [ 187 ] Beycostat A B09 (an acid phosphate ester of ethoxylated nonylphenol), which is an anionic surfactant, has been reported to facilitate the dispersion of CNC during melt processing with PLA, in multiple studies. [ 181–183 ] Gupta et al, [ 184 ] in their studies on the rheological characteristics of melt‐mixed PLA/CNC films, observed that when the CNC particles were coated with bio‐based surfactant lignin, percolation threshold (as evident from a dramatic improvement in η * and G′ values in the low frequency region in melt state dynamic rheological plots, indicating CNC network formation) was achieved at a CNC loading as low as 0.66 wt%.…”

Section: Processing and Characterization Of Pla Nanocompositesmentioning

confidence: 99%

An overview of the recent advances in polylactide‐based sustainable nanocomposites

Banerjee¹,

Ray

2021

Polymer Engineering & Sci

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The article reports recent advances in reference to the existing literature and presents a knowledge gap and potential solution ideas for polylactide (PLA) nanocomposites as sustainable materials. Various types of nanoparticles have been used for the development of PLA nanocomposites; however, this work focuses on PLA nanocomposites of nanoclay, nanocelluloses, carbon nanotube, and graphene. By providing a wholistic overview of the fundamental knowledge pertaining to PLA, and covering all critical aspects related to processing, characterization, and applications of PLA nanocomposites, this review provides a direction for future developments in the field of PLA nanocomposites suitable for various advanced applications, which is still scarce in the literature, including review articles. Moreover, the effects of dispersion/distribution of various types of nanoparticles on the degradation characteristics and special properties, such as cytocompatibility, electrical conductivity, and antimicrobial properties, of PLA nanocomposites are critically reviewed with regard to the nature of nanoparticles used for nanocomposite formation. In summary, this review provides new insight into the design and formulation of advanced PLA nanocomposites for a wide range of applications as sustainable materials.

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Water soluble polymer based hybrid nanocomposites

Cited by 12 publications

References 46 publications

Performance of poly(lactic acid)/ cellulose nanocrystal composite blown films processed by two different compounding approaches

Performance of poly(lactic acid)/ cellulose nanocrystal composite blown films processed by two different compounding approaches

Fabrication of nanocellulose loaded poly(AA‐co‐HEMA) hydrogels for ceftriaxone controlled delivery and crystal violet adsorption

An overview of the recent advances in polylactide‐based sustainable nanocomposites

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