What is the difference between an acrylic sweater and a polyester sweater?

The core difference between spandex sweaters and polyester sweaters stems from the essential characteristics of the two synthetic fibers, which differ significantly in hand feel, warmth, wearability, appearance and care methods. The specific difference is as follows:

I. Core constituents and essential properties

Acrylic (polyacrylonitrile fiber): often referred to as "synthetic wool," the fiber structure is fluffy, the chemical stability is moderate, and the core advantages are warmth and softness close to wool.

Polyester (polyester): The largest synthetic fiber produced at present, the fiber strength is high, the wear resistance is good, the chemical stability is strong, and the core advantage is wear resistance and easy handling.

II. Critical performance differences

1. Touch and hand feel

Acrylic sweater: The hand feels soft and fluffy, has a warm texture similar to wool, has no obvious stiffness when touching, and has high comfort when worn close to the body (high-quality acrylic is especially obvious).

Polyester sweaters: The hand feel is flat and smooth, but the softness is not as good as acrylic. Some polyester sweaters (especially low-hanging fabrics) will have a "plastic feel" and may be slightly sweltering or rough to wear.

2. Heat and breathability

Acrylic sweater: excellent warmth, high puffiness, can lock the air to form a heat insulation, and the warmth effect is close to that of wool, suitable for wearing in cold weather; Air permeability is moderate, slightly better than polyester.

Polyester sweaters: They have poor warmth, dense fibers and fast thermal conductivity, and weak thermal lockability, and are more suitable as bottom or outer thin layers in spring and autumn; They are less breathable and easily accumulate sweat when they are worn, creating a sweltering feeling.

3. Wearability and durability

Acrylic sweaters: Medium wear resistance and general wrinkle resistance, easy to appear "hair and ball" after long-term wear or washing, and the fiber elasticity recovery capacity is weak, and may gradually become loose and deformed.

Polyester sweater: extremely durable, it is a good type of synthetic fiber that is resistant to wear, excellent wrinkle resistance, not easily deformed after washing, strong elastic recovery ability, not loose during long-term wear, and anti-mould and insect decay resistance are better than acrylic.

4. Exterior and luster

Acrylic sweaters: They have a soft glossy texture similar to wool, medium color brightness, good dye stability, but may fade after prolonged sun exposure.

Polyester sweaters: The gloss is bright, some of the fabrics have slightly reflective light (especially high-branched polyester), the color brightness is high, the dye stability is strong (not easy to fade), but the gloss feel is more "industrial" and lacks the warmth of natural fibers.

5. Washing & Care

Acrylic sweaters: Please wash gently. Hand washing or a "gentle step" of the washing machine is recommended. The water temperature is controlled below 30 ° C. Avoid rubbing hard (preventing ball rolling);Do not dry at high temperature, otherwise it will easily contract and harden; After drying, the shape should be arranged in time to avoid deformation.

Polyester sweaters: low care difficulty, washing and sun resistant, machine washable (normal degrees), water temperature no more than 40 ° C, and limited choice of detergents;Supports low temperature drying, the drying speed is fast, it is not easily deformed, and the daily care is more stress-free.

6. Price and applicable scenarios

Acrylic sweaters: Medium in price and suitable for people who are looking for "wool texture" but have a limited budget. They are commonly found in winter sweaters, scarves, knit coats, etc.

Polyester sweaters: Relatively affordable and cost-effective, they are suitable as basic everyday blouses, thin sweaters for spring and autumn, or as the inner layer of outdoor clothing (taking advantage of their wear-resistant, dry nature).

III. Quickly distinguishing Small Tricks

Judging by hand: The probability that it is fluffy and soft and has a texture similar to wool is acryl; The most smooth and slightly "plastic-like" products are polyester.

Burn test: Remove a small amount of fiber and burn. Aline has a burning odor similar to wool when burning, and the ash is a fragile black hard lump and fragile. When it burns, polyester has a pungent odor of plastic charred, and the ash forms a hard ball, unbreakable and sticky with the hand.

Resilience test: Gently pull the fabric of the sweater, and it quickly returns to its original condition after loosening it is polyester. The slower recovery or slightly creases are acrylonitrile.

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