Pineapple leaf fiber fine treatment method

Abstract

The invention relates to a pineapple leaf fiber fine treatment method and belongs to the technical field of fiber fine treatment. According to the method, fibers are firstly subjected to pretreatment by ultrasonic waves, then subjected to swelling treatment by a swelling additive, then subjected to chemical degumming treatment after the swelling treatment to prepare pineapple leaf fiber degummed ramie, and finally teased and refined to obtain pineapple leaf fiber ramie stripes. A loosening fiber structure makes fibers slip easily under the effect of an external teasing and refining force, while the invention may increase the fiber looseness, improve the fiber fineness, improve the fiber quality, enable a chemical degumming additive to enter the inside of the fiber more easily, reduce sewage discharge during degumming, and decrease the degumming treatment cost.

Claims

1. A pineapple leaf fiber treatment method, comprising the following steps: (1) pineapple leaf fiber presoaking treatment: subjecting pineapple leaf fiber in a pretreatment solution to ultrasonic treatment, and then subjecting the pineapple leaf fiber to washing and dewatering treatment; the pretreatment solution is a sulfuric acid solution with mass concentration of 0.051.00% with water, a temperature of 2080 C., and a bath ratio of 1:101:20; an ultrasonic frequency of the ultrasonic treatment in step (1) is 2040 KHz and a time is 20120 min; (2) swelling treatment: putting the pineapple leaf fiber after pretreatment into a compound swelling additive solution for swelling treatment at a temperature of 2075 C., a PH value of 310 and a reaction time of 20120 min; the compound swelling additive solution is a compounded solution by two or more agents selected from cellulase, hemicellulase, pectinase and non-ionic penetrating agent, with a dosage of 0.52% of the weight of the pineapple leaf fiber, and a bath ratio of 1:101:30; (3) degumming and bleaching treatment: subjecting the pineapple leaf fiber after swelling treatment to a chemical degumming treatment, then subjecting the pineapple leaf fiber to a washing and a dewatering, and then putting the pineapple leaf fiber into 515% hydrogen peroxide to bleach for 2050 min at a temperature of 6095 C.; (4) oil feeding: soaking the bleached pineapple leaf fiber in a solution containing 0.53% modified silicone oil agent for 12 h at a soaking temperature of 3075 C.; (5) subjecting the treated pineapple leaf fiber to dewatering, shaking and drying to obtain the degummed pineapple leaf fiber; and (6) teasing: spraying an emulsifying oil agent on the degummed pineapple leaf fiber, the dosage of the emulsifying oil agent being 4%10% of the weight of the fiber, standing in a curing room for a curing time of 2496 h at a curing temperature of 3550 C.; and then performing mechanical teasing and extension refining to prepare the pineapple leaf fiber.

2. The pineapple leaf fiber fine treatment method according to claim 1, wherein the dosage of the swelling protein agent in the compound swelling additive solution of the pineapple leaf fiber in step (2) is 0.51.5% of the weight of the pineapple leaf fiber, the dosage of the cellulase is 0.32.0% of the weight of the pineapple leaf fiber, the dosage of the hemicellulase is 0.52.0% of the weight of the pineapple leaf fiber, the dosage of the pectinase is 0.52.0% of the weight of the pineapple leaf fiber, and the dosage of the penetrating agent is 0.52.5% of the weight of the pineapple leaf fiber.

Description

DETAILED DESCRIPTION OF INVENTION

(1) The invention will be further described in details hereinafter by examples, and these examples are merely for explanation of the invention, and are not intended to limit the scope of the invention.

Embodiment 1

(2) A pineapple leaf fiber fine treatment method includes the following steps:

(3) (1) pineapple leaf fiber presoaking treatment:

(4) the pineapple leaf fiber was subjected to ultrasonic treatment in a pretreatment solution, wherein the pretreatment solution was 0.15% sulfuric acid solution with a temperature of 50 C., a bath ratio of 1:15, an ultrasonic frequency of 30 KHz, and a time of 40 min; then the pineapple leaf fiber was subjected to washing and dewatering treatment;
(2) swelling treatment:
the pineapple leaf fiber after pretreatment was put into a compound swelling additive solution for swelling treatment at a temperature of 55 C., a PH value of 7 and a reaction time of 40 min;
(3) degumming and bleaching treatment:
the pineapple leaf fiber after swelling treatment was subjected to high temperature degumming treatment, then the pineapple leaf fiber was subjected to washing and dewatering, and then put into 515% hydrogen peroxide to bleach for 30 min at a temperature of 70 C.;
(4) oil feeding:
the bleached pineapple leaf fiber was soaked in a solution containing 1% modified silicone oil agent for 1 h at a soaking temperature of 75 C.;
(5) the treated pineapple leaf fiber was subjected to dewatering, shaking and drying to obtain the pineapple leaf fiber degummed ramie; and
(6) teasing:
an emulsifying oil agent was sprayed on the pineapple leaf fiber degummed ramie, the dosage of the emulsifying oil agent being 4% of the weight of the fiber, stood in a curing room for a curing time of 96 h at a curing temperature of 35 C.; and then mechanical teasing and extension refining were performed to prepare the pineapple leaf fiber ramie stripes.

(5) The compound swelling additive solution of the pineapple leaf fiber is compounded of a swelling protein agent, cellulase, hemicellulase, pectinase and non-ionic penetrating agent, with a dosage of 0.5% of the weight of the pineapple leaf fiber, and a bath ratio of 1:10, wherein the dosage of the swelling protein agent in the compound swelling additive solution of the pineapple leaf fiber is 0.5% of the weight of the pineapple leaf fiber, the dosage of the cellulase is 1.0% of the weight of the pineapple leaf fiber, the dosage of the hemicellulase is 0.5% of the weight of the pineapple leaf fiber, the dosage of the pectinase is 1.0% of the weight of the pineapple leaf fiber, and the dosage of the penetrating agent is 1.0% of the weight of the pineapple leaf fiber.

Embodiment 2

(6) A pineapple leaf fiber fine treatment method includes the following steps:

(7) (1) pineapple leaf fiber presoaking treatment:

(8) the pineapple leaf fiber was subjected to ultrasonic treatment in a pretreatment solution, wherein the pretreatment solution was water with a water temperature of 45 C., a bath ratio of 1:15, an ultrasonic frequency of 30 KHz, and a time of 50 min; then the pineapple leaf fiber was subjected to washing and dewatering treatment;
(2) swelling treatment:
the pineapple leaf fiber after pretreatment was put into a compound swelling additive solution for swelling treatment at a temperature of 60 C., a PH value of 7 and a reaction time of 50 min;
(3) degumming and bleaching treatment:
the pineapple leaf fiber after swelling treatment was subjected to high temperature degumming treatment, then the pineapple leaf fiber was subjected to washing and dewatering, and then put into 10% hydrogen peroxide to bleach for 40 min at a temperature of 80 C.;
(4) oil feeding:
the bleached pineapple leaf fiber was soaked in a solution containing 0.5% modified silicone oil agent for 1 h at a soaking temperature of 60 C.;
(5) the treated pineapple leaf fiber was subjected to dewatering, shaking and drying to obtain the pineapple leaf fiber degummed ramie; and
(6) teasing:
an emulsifying oil agent was sprayed on the pineapple leaf fiber degummed ramie, the dosage of the emulsifying oil agent being 6% of the weight of the fiber, stood in a curing room for a curing time of 72 h at a curing temperature of 40 C.; and then mechanical teasing and extension refining were performed to prepare the pineapple leaf fiber ramie stripes.

(9) The compound swelling additive solution of the pineapple leaf fiber is compounded of a swelling protein agent, cellulase, hemicellulase, pectinase and non-ionic penetrating agent, with a dosage of 1.0% of the weight of the pineapple leaf fiber, and a bath ratio of 1:15, wherein the dosage of the swelling protein agent in the compound swelling additive solution of the pineapple leaf fiber is 1.0% of the weight of the pineapple leaf fiber, the dosage of the cellulase is 0.5% of the weight of the pineapple leaf fiber, the dosage of the hemicellulase is 1.0% of the weight of the pineapple leaf fiber, the dosage of the pectinase is 1.0% of the weight of the pineapple leaf fiber, and the dosage of the penetrating agent is 1.0% of the weight of the pineapple leaf fiber.

Embodiment 3

(10) A pineapple leaf fiber fine treatment method includes the following steps:

(11) (1) pineapple leaf fiber presoaking treatment:

(12) the pineapple leaf fiber was subjected to ultrasonic treatment in a pretreatment solution, wherein the pretreatment solution was 1.0% sulfuric acid solution with a temperature of 60 C., a bath ratio of 1:15, an ultrasonic frequency of 25 KHz, and a time of 40 min; then the pineapple leaf fiber was subjected to washing and dewatering treatment;
(2) swelling treatment:
the pineapple leaf fiber after pretreatment was put into a compound swelling additive solution for swelling treatment at a temperature of 50 C., a PH value of 6 and a reaction time of 50 min;
(3) degumming and bleaching treatment:
the pineapple leaf fiber after swelling treatment was subjected to high temperature degumming treatment, then the pineapple leaf fiber was subjected to washing and dewatering, and then put into 15% hydrogen peroxide to bleach for 30 min at a temperature of 70 C.;
(4) oil feeding:
the bleached pineapple leaf fiber was soaked in a solution containing 0.8% modified silicone oil agent for 1.5 h at a soaking temperature of 70 C.;
(5) the treated pineapple leaf fiber was subjected to dewatering, shaking and drying to obtain the pineapple leaf fiber degummed ramie; and
(6) teasing:
an emulsifying oil agent was sprayed on the pineapple leaf fiber degummed ramie, the dosage of the emulsifying oil agent being 5% of the weight of the fiber, stood in a curing room for a curing time of 72 h at a curing temperature of 35 C.; and then mechanical teasing and extension refining were performed to prepare the pineapple leaf fiber ramie stripes.

(13) The compound swelling additive solution of the pineapple leaf fiber is compounded of a swelling protein agent, cellulase, hemicellulase, pectinase and non-ionic penetrating agent, with a dosage of 1.0% of the weight of the pineapple leaf fiber, and a bath ratio of 1:20, wherein the dosage of the swelling protein agent in the compound swelling additive solution of the pineapple leaf fiber is 1.5% of the weight of the pineapple leaf fiber, the dosage of the cellulase is 1.0% of the weight of the pineapple leaf fiber, the dosage of the hemicellulase is 1.0% of the weight of the pineapple leaf fiber, the dosage of the pectinase is 1.0% of the weight of the pineapple leaf fiber, and the dosage of the penetrating agent is 1.0% of the weight of the pineapple leaf fiber.

Embodiment 4

(14) A pineapple leaf fiber fine treatment method includes the following steps:

(15) (1) pineapple leaf fiber presoaking treatment:

(16) the pineapple leaf fiber was subjected to ultrasonic treatment in a pretreatment solution, wherein the pretreatment solution was 0.05% sulfuric acid solution with a temperature of 20 C., a bath ratio of 1:10, an ultrasonic frequency of 20 KHz, and a time of 20 min; then the pineapple leaf fiber was subjected to washing and dewatering treatment;
(2) swelling treatment:
the pineapple leaf fiber after pretreatment was put into a compound swelling additive solution for swelling treatment at a temperature of 20 C., a PH value of 3 and a reaction time of 20 min;
(3) degumming and bleaching treatment:
the pineapple leaf fiber after swelling treatment was subjected to high temperature degumming treatment, then the pineapple leaf fiber was subjected to washing and dewatering, and then put into 5% hydrogen peroxide to bleach for 20 min at a temperature of 60 C.;
(4) oil feeding:
the bleached pineapple leaf fiber was soaked in a solution containing 0.5% modified silicone oil agent for 1 h at a soaking temperature of 30 C.;
(5) the treated pineapple leaf fiber was subjected to dewatering, shaking and drying to obtain the pineapple leaf fiber degummed ramie; and
(6) teasing:
an emulsifying oil agent was sprayed on the pineapple leaf fiber degummed ramie, the dosage of the emulsifying oil agent being 7% of the weight of the fiber, stood in a curing room for a curing time of 48 h at a curing temperature of 40 C.; and then mechanical teasing and extension refining were performed to prepare the pineapple leaf fiber ramie stripes.

(17) The compound swelling additive solution of the pineapple leaf fiber is compounded of a swelling protein agent, cellulase, hemicellulase, pectinase and non-ionic penetrating agent, with a dosage of 0.5% of the weight of the pineapple leaf fiber, and a bath ratio of 1:10, wherein the dosage of the swelling protein agent in the compound swelling additive solution of the pineapple leaf fiber is 0.5% of the weight of the pineapple leaf fiber, the dosage of the cellulase is 0.3% of the weight of the pineapple leaf fiber, the dosage of the hemicellulase is 0.5% of the weight of the pineapple leaf fiber, the dosage of the pectinase is 0.5% of the weight of the pineapple leaf fiber, and the dosage of the penetrating agent is 0.5% of the weight of the pineapple leaf fiber.

Embodiment 5

(18) A pineapple leaf fiber fine treatment method includes the following steps:

(19) (1) pineapple leaf fiber presoaking treatment:

(20) the pineapple leaf fiber was subjected to ultrasonic treatment in a pretreatment solution, wherein the pretreatment solution was 1.0% sulfuric acid solution with a temperature of 80 C., a bath ratio of 1:20, an ultrasonic frequency of 40 KHz, and a time of 120 min; then the pineapple leaf fiber was subjected to washing and dewatering treatment;
(2) swelling treatment:
the pineapple leaf fiber after pretreatment was put into a compound swelling additive solution for swelling treatment at a temperature of 75 C., a PH value of 10 and a reaction time of 120 min;
(3) degumming and bleaching treatment:
the pineapple leaf fiber after swelling treatment was subjected to high temperature degumming treatment, then the pineapple leaf fiber was subjected to washing and dewatering, and then put into 15% hydrogen peroxide to bleach for 30 min at a temperature of 95 C.;
(4) oil feeding:
the bleached pineapple leaf fiber was soaked in a solution containing 3% modified silicone oil agent for 2 h at a soaking temperature of 75 C.;
(5) the treated pineapple leaf fiber was subjected to dewatering, shaking and drying to obtain the pineapple leaf fiber degummed ramie; and
(6) teasing:
an emulsifying oil agent was sprayed on the pineapple leaf fiber degummed ramie, the dosage of the emulsifying oil agent being 10% of the weight of the fiber, stood in a curing room for a curing time of 24 h at a curing temperature of 45 C.; and then mechanical teasing and extension refining were performed to prepare the pineapple leaf fiber ramie stripes.

(21) The compound swelling additive solution of the pineapple leaf fiber is compounded of a swelling protein agent, cellulase, hemicellulase, pectinase and non-ionic penetrating agent, with a dosage of 2% of the weight of the pineapple leaf fiber, and a bath ratio of 1:30, wherein the dosage of the swelling protein agent in the compound swelling additive solution of the pineapple leaf fiber is 1.5% of the weight of the pineapple leaf fiber, the dosage of the cellulase is 2.0% of the weight of the pineapple leaf fiber, the dosage of the hemicellulase is 2.0% of the weight of the pineapple leaf fiber, the dosage of the pectinase is 2.0% of the weight of the pineapple leaf fiber, and the dosage of the penetrating agent is 2.5% of the weight of the pineapple leaf fiber.