Microfibrous cyclodextrin boosts flame retardancy of poly(lactic acid) II - phosphorous silane treatment further enhances the effectivity

Decsov, Kata Enikő; Ötvös, Bettina; Marosi, György; Bocz, Katalin

doi:10.1016/j.polymdegradstab.2022.109938

Cited by 8 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average burn length for CAB/IC was recorded as 1.57 cm, which is highly encouraging for a Bioplastic treated with a polysaccharide complexed flame retardant. CDs have been used as an effective source of char formation among polymers such as epoxy acrylates and PLA. , But in the case of CAB, γ-CD did not impart any flame retardancy in comparison to neat CAB. Upon comparing the average rate of burning on a weight basis, CAB/CD had a slightly lower burn rate of 2.84 versus 3.16 mg/s for neat CAB.…”

Section: Resultsmentioning

confidence: 99%

“…CDs have been used as an effective source of char formation among polymers such as epoxy acrylates and PLA. 31,32 But in the case of CAB, γ-CD did not impart any flame retardancy in comparison to neat CAB. Upon comparing the average rate of burning on a weight basis, CAB/CD had a slightly lower burn rate of 2.84 versus 3.16 mg/s for neat CAB.…”

Section: Melting Behavior Of Additives For Cab Meltmentioning

confidence: 93%

See 1 more Smart Citation

Organophosphate-Cyclodextrin Inclusion Complex for Flame Retardancy in Doped Cellulose Acetate Butyrate Melt-Spun Fibers

Park,

Banerjee,

Jin

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Organophosphates are widely used flame retardants (FR) in everyday applications, and their leaching over time is a gaining concern. In this research, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was chosen as a representative organophosphate FR to examine inclusion complex (IC) formation with γ-cyclodextrins (γ-CD) to enhance char formation as well as prevent the unnecessary release of toxic FR chemicals. The addition of ionic salts, sodium chloride (NaCl), and calcium chloride (CaCl2) during the formation increased the yield of IC crystals by up to 50%. However, perfect crystals were formed only when pure IC was formed, devoid of only metal crystals. Continuous melt spinning of cellulose acetate butyrate (CAB) is practically very difficult in the presence of incompatible DOPO in the system. The formed IC was compatible with biopolymer CAB due to hydroxyl groups from γ-cyclodextrin at the periphery. CAB/IC fibers were melt-spun alongside reference pure CAB and CAB/CD fibers. CAB was found to form complexation with CD in the absence of DOPO in the cavity, as corroborated by FTIR and tensile properties. Furthermore, the response to flame was noted as compared to reference pure CAB and CAB/CD fibers. CAB/IC was found to have self-extinguishing behavior via the formation of a char layer even at ∼0.8 wt % DOPO fraction in the fiber.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Melting Behavior Of Additives For Cab Meltmentioning

confidence: 93%

Organophosphate-Cyclodextrin Inclusion Complex for Flame Retardancy in Doped Cellulose Acetate Butyrate Melt-Spun Fibers

Park,

Banerjee,

Jin

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…As pointed out by Feng et al , 25 the LOI result of PLA containing 20 wt% FR (weight ratio of CD/APP/MA (melamine) was 1 : 2 : 1) reached 34.2% with UL-94 V-0 grading. Besides, Decsov et al 26 claimed that the LOI result of PLA with 15 wt% modified FR CD reached 37.5% with UL-94 V-0 grading. According to Jing et al , 27 the LOI of PLA with 10% APP–BPE (BPE)–PEI (PEI) reached 27.5% with a UL-94 V-0 rating and that of PLA with a core–shell structure of 10% APP–BPE–PEI reached 27.5% with a UL-94 V-0 rating.…”

mentioning

confidence: 99%

“…Recently, sustainable biological FR additives, such as lignin, [10][11][12][13][14] cellulose, [15][16][17] starch, 18,19 chitosan (CS), [20][21][22][23] protein, 24 b-cyclodextrin (CD), 25,26 polydopamine (PDA), 29 phytic acid (PA), [30][31][32][33] vegetable oils, furan (FA) [35][36][37] etc. have become a hot and attractive topic.…”

mentioning

confidence: 99%

Super-efficient fire safety poly(lactide) enabled by unique radical trapping

Xiao

Chen

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Phosphorus and Silicon Modified Alginate as an Efficient Flame Retardant for Poly(lactic acid)

Decsov,

Cserni,

Szolnoki

et al. 2024

Macro Materials & Eng

View full text Add to dashboard Cite

The introduction of biobased carbon sources in intumescent flame retardant formulations is extensively explored, particularly for biopolymers such as poly(lactic acid) (PLA). In this work, the flame retardant efficiency of alginate, a favorable renewable charring agent candidate, is enhanced by chemical modification with a phosphorus‐ and silicon‐containing compound and subsequent coagulation in the presence of Ca2+ ions. The simultaneous presence of P and Si atoms in the reactive compound is shown to be an effective way to avoid thermal stability issues related to the biobased carbohydrate. The newly synthesized PSilAlg additive boosts the flame‐retardant effectiveness of ammonium‐polyphosphate (APP) at low loadings. Adding 5 wt% PSilAlg to 15 wt% APP containing PLA composite increases the limiting oxygen index from 26.0 to 34.0 vol% and decreases the total heat emission during combustion by 46%, accompanied by significantly (by 66%) reduced smoke production. The outstanding flame retardant performance of PSilAlg is attributed to the high amount and thermally stable carbonaceous fire‐protecting layer that forms as a result of the enhanced charring, catalyzed by the high oxidation state P, and the strengthening mechanism of inorganic silicates and calcium salts.

show abstract

Microfibrous cyclodextrin boosts flame retardancy of poly(lactic acid) II - phosphorous silane treatment further enhances the effectivity

Cited by 8 publications

References 31 publications

Organophosphate-Cyclodextrin Inclusion Complex for Flame Retardancy in Doped Cellulose Acetate Butyrate Melt-Spun Fibers

Organophosphate-Cyclodextrin Inclusion Complex for Flame Retardancy in Doped Cellulose Acetate Butyrate Melt-Spun Fibers

Super-efficient fire safety poly(lactide) enabled by unique radical trapping

Phosphorus and Silicon Modified Alginate as an Efficient Flame Retardant for Poly(lactic acid)

Contact Info

Product

Resources

About